18 Month Sleep Regression Guide

18 Month Sleep Regression Guide

Jane Bradford

9 sept 2024

18 months

9 sept 2024

18 month old baby falling asleep

Just when you think you've got your little one's sleep schedule figured out, along comes the 18 month sleep regression to throw a wrench in the works. If you're finding yourself bleary-eyed and wondering what on earth happened to your once-perfect sleeper, you're not alone. I've been there, and I'm here to walk you through this challenging phase with some hard-earned wisdom and expert insights.


In this guide, we'll dive deep into what the 18 month sleep regression is, why it happens, and most importantly, how you can survive it without losing your sanity. So grab a cup of coffee (you'll probably need it), and let's get started on this journey together.


What is the 18 Month Sleep Regression?

First things first, let's demystify what we're dealing with here. A sleep regression is a period when a baby or toddler who has been sleeping well suddenly starts waking at night, fighting naps, or having trouble falling asleep. The 18 month sleep regression is a particular bump in the road that many parents encounter just as their little ones are transitioning from baby to toddler.

According to the Sleep Foundation, sleep regressions are often tied to developmental milestones. The 18 month mark is no exception – it's a time of rapid growth and change for your toddler, which can wreak havoc on their sleep patterns.


Signs and Symptoms of 18 Month Sleep Regression

How do you know if you're in the throes of the 18 month sleep regression? Here are some telltale signs:

  • Increased night wakings

  • Difficulty falling asleep at bedtime

  • Fighting naps or skipping them altogether

  • Early morning wake-ups

  • Increased clinginess or separation anxiety at bedtime

  • Crankiness or irritability during the day due to lack of sleep

If you're nodding your head to several of these, chances are you're dealing with the infamous 18 month sleep regression.


How Does 18 Month Sleep Regression Differ from Earlier Regressions?

You might be thinking, "Haven't we been through this before?" And you're right – sleep regressions can occur at various stages of a child's development. However, the 18 month regression has its own unique challenges.

Unlike earlier regressions, such as the 4 month or 8 month sleep regression, your child is now more aware, more mobile, and more vocal about their preferences. This can make the 18 month regression feel more intense and challenging to navigate.

Research published in the Journal of Clinical Sleep Medicine suggests that sleep patterns continue to evolve throughout early childhood, with notable changes around 18 months of age. This particular regression often coincides with significant cognitive and physical developments, making it a perfect storm for sleep disruptions.


Why Does the 18 Month Sleep Regression Happen?

To understand why your once-perfect sleeper is suddenly fighting bedtime tooth and nail, we need to look at what's going on in their rapidly developing brain and body.


Cognitive Development at 18 Months

At 18 months, your toddler's brain is buzzing with activity. They're learning new words every day, starting to understand cause and effect, and their imagination is taking off. All this cognitive growth can lead to:

  • Increased separation anxiety

  • Newfound fears (like fear of the dark)

  • Difficulty "turning off" their busy brain at bedtime

Zero to Three, a nonprofit organization focused on infant and toddler development, notes that this age is marked by significant advances in language and thinking skills. Your toddler might be so excited about their new abilities that they'd rather stay awake to practice than go to sleep!


Physical Growth and Its Impact on Sleep

It's not just your toddler's brain that's growing – their body is too. Around 18 months, many children experience:

  • Growth spurts that can cause discomfort

  • Teething (those stubborn molars!)

  • Increased physical abilities leading to more daytime activity

All these physical changes can disrupt sleep patterns. Your toddler might be too uncomfortable to settle easily, or so excited about their new physical skills that they want to practice climbing out of the crib rather than sleeping in it.


How Long Does the 18 Month Sleep Regression Last?

Now for the question on every tired parent's mind: how long will this last? The good news is that sleep regressions are typically temporary. Most experts agree that sleep regressions generally last between 2-6 weeks.

However, it's important to note that every child is different. Some may breeze through this phase in a couple of weeks, while others might take a bit longer to settle back into a good sleep routine. The key is consistency in your approach (which we'll get to in a moment) and patience.


7 Effective Strategies to Survive the 18 Month Sleep Regression

Alright, now that we understand what we're dealing with, let's talk solutions. Here are seven strategies that can help you and your toddler weather this storm:


1. Maintaining a Consistent Bedtime Routine

Consistency is key when it comes to sleep, especially during regressions. A predictable bedtime routine signals to your toddler that it's time to wind down and prepare for sleep.

Your routine might include:

  • A warm bath

  • Putting on pajamas

  • Reading a story

  • Singing a lullaby

  • Giving goodnight kisses

The exact activities don't matter as much as doing them in the same order each night. This predictability can be comforting to your toddler during a time of change.


2. Creating an Ideal Sleep Environment

Set the stage for sleep success by optimizing your toddler's sleep environment. Consider:

  • Room temperature (around 68-72°F is ideal for sleep)

  • Darkness (use blackout curtains if necessary)

  • White noise to mask household sounds

  • Comfortable sleepwear and bedding

The Sleep Foundation emphasizes the importance of the sleep environment in promoting quality sleep. A cool, dark, quiet room can make a big difference in helping your toddler settle and stay asleep.


3. Addressing Separation Anxiety at Bedtime

Separation anxiety often peaks around 18 months, making bedtime particularly challenging. Try these techniques:

  • Use a comfort object (like a favorite stuffed animal)

  • Play peek-a-boo or hide-and-seek during the day to reinforce the idea that you always come back

  • Gradually increase the time you spend out of the room during bedtime routine

Remember, it's okay to offer comfort, but try to avoid creating new sleep crutches that might be hard to break later.


4. Adjusting Nap Schedules

At 18 months, many toddlers are transitioning from two naps to one. This shift can temporarily disrupt nighttime sleep. Pay attention to your child's cues and be flexible with nap times. You might need to move bedtime earlier if your toddler is struggling with the nap transition.


5. Encouraging Physical Activity During the Day

A tired toddler is generally a better-sleeping toddler. Ensure your little one gets plenty of physical activity during the day. This could include:

  • Playground time

  • Dance parties

  • Toddler-friendly sports or classes

Just be sure to wind down active play a couple of hours before bedtime to allow time for relaxation.


6. Managing Nighttime Wake-ups

When your toddler wakes at night, keep interactions brief and boring. Offer reassurance, but avoid turning on lights or starting play. This helps reinforce that nighttime is for sleeping.


7. Taking Care of Yourself

Last but certainly not least, don't forget about your own well-being. Sleep deprivation can take a toll on your mental health. Take turns with your partner for night duty if possible, and don't be afraid to ask for help from family or friends. Remember, you can't pour from an empty cup!


When Should You Be Concerned About Your 18 Month Old's Sleep?

While sleep regressions are normal, there are times when you might need to consult with your pediatrician. Be on the lookout for:

  • Persistent sleep issues lasting more than 6-8 weeks

  • Signs of sleep apnea (loud snoring, pauses in breathing during sleep)

  • Extreme daytime sleepiness or irritability

  • Any sudden changes in sleep patterns accompanied by other health concerns

Trust your instincts. If something doesn't feel right, it's always better to check with a healthcare professional.


Can Sleep Training Help During the 18 Month Regression?

If you've previously sleep trained your child, you might be wondering if it's time for a refresher course. The answer is: maybe. While sleep training can be effective, it's important to approach it sensitively at this age.

A study published in Pediatrics found that behavioral sleep interventions can improve sleep in young children. However, at 18 months, your toddler is more aware and may have stronger opinions about sleep. Any sleep training should be gentle and responsive to your child's emotional needs.

Some gentle sleep training methods you might consider:

  • The chair method

  • Gradual withdrawal

  • Scheduled awakening

Remember, consistency is key with any sleep training approach.


Nutrition and the 18 Month Sleep Regression: Is There a Connection?

Believe it or not, what your toddler eats during the day can impact their sleep at night. At 18 months, your child's dietary needs are changing, and this can sometimes affect sleep patterns.

Here are a few nutrition tips that might help with sleep:

Always consult with your pediatrician before making significant changes to your child's diet.


The Role of Daytime Activities in Managing 18 Month Sleep Regression

Your toddler's daytime schedule can have a big impact on their nighttime sleep. Here are some tips for structuring your day to promote better sleep:

  • Stick to a consistent wake-up time, even on weekends.

  • Ensure your toddler gets plenty of natural light during the day, which helps regulate their circadian rhythm.

  • Balance active play with quieter activities to prevent overstimulation.

  • Try to keep the hour before bedtime calm and quiet to help your toddler wind down.

Remember, every child is different, so pay attention to what activities seem to help your toddler sleep better and which ones might be overstimulating.


Frequently Asked Questions About 18 Month Sleep Regression


Is the 18 month sleep regression worse than earlier regressions?

While every child is different, many parents find the 18 month sleep regression particularly challenging. This is often due to your toddler's increased awareness, language skills, and mobility. However, with consistent approaches and patience, this too shall pass.


Can teething cause sleep regression at 18 months?

Yes, teething can definitely contribute to sleep issues around 18 months. Many toddlers are cutting their first molars at this age, which can be particularly uncomfortable. While teething might not be the sole cause of sleep regression, it can certainly exacerbate sleep problems.


Should I adjust nap times during the 18 month sleep regression?

It might be necessary to adjust nap times during this period, especially if your toddler is transitioning from two naps to one. Pay attention to your child's sleepy cues and be flexible. You might need to move bedtime earlier temporarily if naps are disrupted.


How can I tell if it's sleep regression or a sleep disorder?

Sleep regressions are typically temporary and often coincide with developmental milestones. If sleep issues persist beyond 6-8 weeks, or if you notice other concerning symptoms (like loud snoring or extreme daytime sleepiness), it's worth consulting with your pediatrician to rule out sleep disorders.


Can the 18 month sleep regression affect daytime behavior?

Absolutely. Lack of sleep can lead to irritability, increased tantrums, difficulty concentrating, and even affect appetite. This is why it's so important to address sleep issues – good sleep supports your toddler's overall well-being and development.

Remember, the 18 month sleep regression is a phase, and with patience and consistency, you and your toddler will get through it. Every child is unique, so don't be afraid to adapt these strategies to fit your family's needs. And most importantly, be kind to yourself during this challenging time. You're doing great, and this too shall pass!

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Note: This content is for informational purposes only and should not replace medical advice from your doctor, pediatrician, or medical professional. If you have questions or concerns, you should contact a medical professional.