15-month sleep regression: Causes, signs, and tips to help baby sleep


Have you found yourself in the throes of the infamous 15-month sleep regression? First of all, take a deep breath – you’re not alone. It’s like facing a new challenge just when you thought you were getting the hang of this whole parenting thing. 

But fear not, because in this blog, we’re diving deep into what causes this sleep hiccup, spotting the signs that it’s happening, and most importantly, sharing some tips and tricks to help both you and your little one catch some much-needed Z’s.

So, grab a cup of coffee (or tea, or whatever gets you through the day), and let’s tackle this sleep regression together.

Is there a 15-month sleep regression?

The short answer: yes, and it’s not just a figment of your sleep-deprived imagination. Many parents notice a disruption in their little one’s sleep patterns around the 15-month mark, and it can feel like a sudden setback after months of relatively smooth sailing. While not every child experiences this regression in the same way, it’s a common enough occurrence to have earned its own spot in the parenting lexicon.

Signs your baby is undergoing 15-month sleep regression

Feeling like you’re stuck in a sleepless loop? Here are some signs that might help you determine if your little one is going through the 15-month sleep regression:

  • Increased nighttime wake-ups
  • Difficulty falling asleep at bedtime
  • Shorter naps or refusing to nap altogether
  • Restlessness or frequent tossing and turning during sleep
  • Waking up earlier than usual in the morning
  • Irritability or moodiness during the day
  • Changes in appetite or feeding patterns

Causes behind your baby’s 15-month sleep regression

Understanding why your little one is suddenly resisting bedtime or waking up more frequently can feel like solving a complex puzzle. But fear not, there are several common culprits behind the 15-month sleep regression that might shed some light on what’s going on.

Here are some causes behind your toddler’s sleep regression:

  • Growth spurts

Around 15 months, toddlers often experience rapid growth spurts, which can lead to discomfort and disrupted sleep patterns as their bodies adjust.

  • Developmental milestones

Your little explorer is hitting new milestones left and right, from learning to walk to mastering new words. All this newfound development can be exciting, but it can also disrupt sleep as their brains process all the new information.

  • Teething troubles

Those tiny teeth making their grand entrance can cause discomfort and pain, making it harder for your baby to settle down for a peaceful night’s sleep.

  • Separation anxiety

At around 15 months, separation anxiety can rear its head as your baby becomes more aware of their surroundings and forms stronger attachments to you. This can lead to bedtime battles and frequent nighttime wake-ups seeking comfort and reassurance.

  • Changes in routine

Whether transitioning to one nap a day or starting daycare, any changes to your baby’s routine can throw off their sleep patterns and lead to regression.

Understanding these potential causes can help you navigate this challenging phase with patience and empathy, knowing that it’s just a temporary bump in the road to a good night’s sleep for you and your little one.

When does the 15-month sleep regression start and end?

The 15-month sleep regression typically starts around 15 months, but it can vary from baby to baby. It’s important to remember that every child is unique, so while some may experience it right on schedule, others might hit this regression a bit earlier or later.

As for when it ends, generally, the 15-month sleep regression can last anywhere from a few weeks to a couple of months. Once your little one has adjusted to whatever developmental changes or disruptions were causing the regression, you’ll likely start to see improvements in their sleep patterns again. Hang in there!

How to handle baby’s 15-month sleep regression: Tips and tricks

Navigating through your baby’s 15-month sleep regression may feel like sailing through stormy seas, but fear not, because there are strategies to help you weather the storm and find smoother waters ahead.

Here are some tips and tricks to manage the regression:

  • Stick to a consistent bedtime routine

Establishing a calming bedtime routine signals to your baby that it’s time to wind down and prepare for sleep. Consistency is key here, so try to keep the routine the same each night to help your little one feel secure and relaxed. Try to stick to a consistent sleep schedule, with regular nap times and bedtime, even on weekends or during disruptions.

Consistency can help regulate your baby’s internal clock and improve their overall sleep quality.

  • Encourage independent sleep skills

Help your baby learn to self-soothe by gently encouraging them to fall asleep on their own. This might involve gradually reducing your involvement in their bedtime routine or practicing gentle sleep training methods.

  • Offer comfort and reassurance

During times of regression, your baby may need extra comfort and reassurance. Respond to their cries with love and patience, offering soothing cuddles and gentle words to help them feel safe and secure.

  • Limit screen time before bedtime

Excessive screen time before bed can interfere with your baby’s ability to fall asleep and stay asleep. Aim to limit screen time at least an hour before bedtime and opt for calming activities instead, such as reading or gentle play.

  • Stay patient and flexible

Remember, sleep regressions are temporary and a normal part of your baby’s development. Stay patient and flexible as you navigate through this challenging phase, knowing that it will pass in time.

  • Create a sleep-friendly environment

Make sure your baby’s sleep environment is conducive to restful slumber. Keep the room dark, quiet, and at a comfortable temperature to promote deep sleep.


In conclusion, navigating through your baby’s 15-month sleep regression may feel like a daunting task, but armed with understanding, patience, and the right strategies, you can help guide your little one back to restful nights and rejuvenating sleep.

Remember, this phase is temporary, and with love and consistency, you’ll soon find yourselves on the other side, enjoying those sweet moments of peaceful slumber once again. Stay resilient, trust your instincts, and know that you’re doing an amazing job supporting your baby through this developmental milestone. Here’s to brighter mornings and happier nights ahead!

Other posts you might like:


You may also like


Stay in the know

Sign up to get sleep tips, exciting product updates, and special offers right into your inbox.