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18-Month-Old Sleep Regression

Baby sleeping
Is your once-reliable sleeper suddenly up at night, fighting naps, or waking with the birds? Take a deep breath! This frustrating phase might be a sign of incredible progress, not a sleep regression.
 

Growing Brains, Shaky Sleep

When your little one experiences a period of disrupted sleep, it could be their brain working overtime! Around 16-20 months, toddlers experience major developmental leaps – physically, mentally, and emotionally. They're becoming more independent, grasping cause-and-effect, and realizing their actions can influence the world around them. This newfound awareness can lead to thoughts like, "Wait, I can choose what I do... maybe I don't have to sleep!"

Beyond Sleep: A Burst of New Skills

This growth spurt isn't just about sleep. Your little explorer might be mastering new skills like running, climbing, following simple instructions, or mimicking household chores. Even if these haven't emerged yet, chances are they're right around the corner!

The 18-Month Sleep Regression: A Temporary Phase

The sleep disruption caused by this exciting developmental phase is often called the 18-month sleep regression. While frustrating, it's usually temporary. With a little patience and consistency, you can help your toddler navigate this new phase and get back to restful nights.

Is It Separation Anxiety or Something Else?

Yes, many babies experience a peak of separation anxiety around 18 months. This desire for independence can clash with their need for security, leading to bedtime and naptime protests.

Why Won't My Toddler Sleep Through the Night?

Several factors can contribute to nighttime wakings:

    • Sickness or Teething: Rule out any physical concerns first.
    • Needs Adjustment: Review your toddler's wake windows and sleep schedule. They might be overtired or undertired.
    • Nap Transition: If your 18-month-old still takes two naps, it might be time to drop to one.
    • The 18-Month Sleep Regression: Don't worry! We have tips to help your little one through it.

Signs of the 18-Month Sleep Regression:

    • Shorter naps or skipped naps altogether
    • Separation anxiety at bedtime or naptime
    • Nighttime wakings that weren't an issue before
    • Bedtime stalling or tantrums
    • Taking longer to fall asleep or fighting sleep
    • Early morning wakings
    • Generally "off" sleep patterns

How Long Does It Last?

Thankfully, the 18-month sleep regression is temporary, typically lasting about 1-2 weeks. Their brains and bodies are simply working hard as they develop!

Helping Your Little One Through the Regression:

    • Active Play: Fill their awake time with activities to tire them out.
    • Wake Windows: Ensure they have the right amount of awake time before sleep.
    • Empowerment: Offer choices within boundaries to promote independence.
    • Prioritize Sleep: Even if they resist naps or take short ones, adjust bedtime accordingly.
    • Consistency: Keep boundaries clear and consistent even during challenging nights.
    • Have a Plan: For more guidance, our 5-24 Month Collection offers a step-by-step plan for restful sleep.

Remember, this is a temporary phase. By understanding the reasons behind the sleep disruptions and using these tips, you can help your little one through the 18-month sleep regression and get back to enjoying peaceful nights together.

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Our articles are written and medically reviewed by qualified specialists, but they're for informational purposes only and don't replace professional medical advice. Always consult your pediatrician with any questions about your child's health, sleep, or development. Read our full disclaimer and editorial policy.