Understanding and Managing the 18-Month Sleep Regression

Navigating the challenges

18 month olds are so much fun. They are walking around, are starting to use more and more words and show more affection to the people around them. But, if you find yourself wondering what on earth has happened to your 18 month old’s sleep, keep reading! 

What is happening exactly during the 18 month sleep regression? 

Around the 18-month mark, your mini-me is going through some serious upgrades. Think of it as a growth spurt for the brain, and that can stir up some nighttime shenanigans. Even if your little one was previously sleeping through the night and napping great, you might start to see them having a harder time falling or staying asleep, or refusing to nap. 

Newfound skills will influence sleep in a big way. They need time to process their new skills and what better time to do this than during the night. For them, it’s also far more exciting showing off their new skills than simply going to sleep! That’s why we often refer to a sleep regression as a progression, your little one gets an upgrade!

Why is this happening?

The most common culprits include:

Brain development: Rapid brain growth occurs during this period, impacting various cognitive functions. As a result, your toddler may become more aware of their surroundings, leading to increased restlessness.

Independence struggle: Toddlers at 18 months are beginning to assert their independence, a crucial part of their development. This newfound autonomy can manifest as a desire to control their sleep environment, resulting in bedtime battles.

Language explosion: Language development takes a leap, with toddlers acquiring new words and expressions and sometimes even linking two words together!

Motor Skills Advancement: Enhanced motor skills, such as walking and climbing, can lead to increased physical activity during the day, which may affect nighttime sleep.

Emotional Development: Growing emotional awareness and independence may result in separation anxiety, making it challenging for your toddler to settle down independently at bedtime.

Next to this, sleep needs are changing and with your baby needing less sleep, it might be necessary to drop to one midday nap. Holding on to two naps a day for too long can negatively affect sleep! Your toddler needs somewhere between 11 - 14 hours of sleep within a 24 hour period. 

What are the signs of the 18-Month Sleep Regression?

Recognising the signs of the 18-month sleep regression is crucial for effectively managing the challenges that arise. Look out for:

  • Nap refusal: they simply aren’t able to fall asleep. They might lie awake happily in their bed, or cry out for you as soon as you leave the room. 

  • Increased night wakings: Your toddler may wake more frequently during the night, seeking comfort or attention.

  • Refusal to sleep: Bedtime resistance can become more pronounced as your toddler asserts their independence.

  • Changes in naps: Nap time may become irregular or shortened, impacting overall sleep duration.

Will every baby go through the 18 month sleep regression?


Each baby experiences multiple stages of significant development. While some babies are minimally impacted and maintain their regular sleep patterns, others may see substantial disruptions in their sleep. The degree of influence often hinges on the baby's temperament and established sleep habits.

By understanding the underlying reasons, recognising the signs, and implementing holistic strategies, you can navigate this challenging phase with patience and grace.

Managing the Progression with Holistic Approaches

Now that you understand why the 18-month sleep regression occurs and what changes are unfolding in your toddler's development, let's explore holistic strategies to manage this progression:

  1. Consistent routine: Establish a calming bedtime routine that signals to your toddler that it's time to wind down. Consistency provides a sense of security during this period of change.

  2. Create a comfortable sleep environment: Ensure your toddler's sleep space is conducive to rest, with dim lighting, a comfortable mattress, and a consistent room temperature.

  3. Respond with empathy: Acknowledge your toddler's emerging independence and respond to their needs with empathy. Offer comfort without creating dependency, promoting a sense of security.

  4. Encourage self-Soothing: Offer support when needed, but foster self-soothing skills by allowing your toddler some independence during bedtime. Gradually transition from active soothing to passive presence as they learn to settle on their own.

  5. Practice new skills: Allow for lots of physical play time and let your little one explore their new skills during the day. Get outside the house to get in that much needed vitamin D.

  6. Focus on connection: Carve away enough time during the day, especially before bedtime, to spend some uninterrupted 1 on 1 time with your toddler. Let them take the lead in what they want to do. Get in lots of cuddles and kisses and fill their cup. 

The 18-month sleep regression is a natural part of your toddler's development journey. By understanding the underlying reasons, recognising the signs, and implementing holistic strategies, you can navigate this challenging phase with patience and grace. Remember, each child is unique, so tailor your approach to meet the individual needs of your little one.

If nap- or bedtime stays a struggle, check out my one on one sleep support packages. I offer holistic sleep support, tailored to your family. 


 
Merel Sekan

Merel is the founder of Settle for Sleep. Originally from Amsterdam, the Netherlands but currently living in Bali, Indonesia together with her husband and son (‘21).

It has become her passion to educate parents on normal infant sleep, and improve naps and nights where possible. Always in a holistic matter, looking at a family’s unique situation.

https://www.settleforsleep.com
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