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Understanding the 15 Month Sleep Regression

If you thought you were past the days of sleepless nights once your baby turned one, you might find the reality slightly different. One common occurrence that can disturb the peace is known as the “15 month sleep regression”. In this guide, we delve into what the 15 month sleep regression is, its symptoms, and how to navigate this challenging period.

What is the 15 Month Sleep Regression?

Just when you thought your baby’s sleep schedule was becoming predictable, you find yourself back to sleepless nights and cranky days. The culprit? It might be the 15 month sleep regression. This is a period when a toddler who has been sleeping well suddenly begins waking up during the night and having difficulty going back to sleep.

Identifying the Symptoms of the 15 Month Sleep Regression

Recognizing the signs of the 15 month sleep regression can help you address it promptly. Here are some common symptoms:

  • Your toddler might wake up more often during the night.
  • They could find it challenging to go back to sleep once awake.
  • There might be resistance to nap times during the day.
  • Increased fussiness due to lack of sleep.
  • Changes in appetite.

Why Does the 15 Month Sleep Regression Happen?

The 15 month sleep regression can occur for a variety of reasons. Some of the common causes include teething, separation anxiety, or major developmental leaps. The world is a fascinating place for a 15 month old and these new experiences and growths can sometimes disrupt their sleep.

Tackling the 15 Month Sleep Regression

There’s no one-size-fits-all solution for the 15 month sleep regression, but here are some tried-and-tested strategies that may help:

  • Stick to a consistent sleep schedule.
  • Provide a soothing environment for sleep.
  • Ensure the toddler gets plenty of physical activity during the day.
  • Address any potential causes like teething pain.
  • Practice patience – this phase will pass.

Is There a Sleep Regression at 15 Months?

Yes, many toddlers do experience a sleep regression around 15 months. This is a period where a previously well-sleeping toddler might start waking up frequently during the night and having difficulty going back to sleep. However, it’s important to remember that not all toddlers will go through this phase.

How Long Does the 15 Month Sleep Regression Last?

The length of the 15 month sleep regression can vary for each toddler, but generally, it tends to last anywhere from 2 to 6 weeks. The regression might be shorter or longer depending on the child and any underlying issues that may be affecting sleep, such as teething or illness.

Why is my 15 Month Old Waking Up Inconsolable?

If your 15 month old is waking up inconsolable, it might be due to the sleep regression. However, other factors could be causing this, such as teething, illness, or separation anxiety. If this behavior persists, it’s recommended to consult your pediatrician to rule out any medical issues.

Why is My 15 Month Old Not Sleeping All of a Sudden?

A sudden change in your 15 month old’s sleep pattern could be a sign of sleep regression. However, other factors might also contribute, such as illness, changes in routine, or a new developmental milestone. It’s essential to identify the possible cause to address it effectively.

What to Do During the 15 Month Sleep Regression?

Dealing with the 15 month sleep regression can be challenging, but the following strategies might help:

  • Stick to a consistent sleep schedule.
  • Provide a soothing and comfortable sleep environment.
  • Ensure your toddler gets plenty of physical activity during the day.
  • Be patient and remember, this phase will pass.

How Do I Stop My 15 Month Sleep Regression?

While you can’t necessarily “stop” a sleep regression, you can manage it. The key is maintaining consistency in your child’s sleep routine, providing a comfortable sleep environment, and addressing any potential underlying issues like teething pain. In time, the sleep regression will resolve itself.

Is There a Developmental Leap at 15 Months?

Yes, around the 15 month mark, many toddlers experience a developmental leap. This might involve learning new skills, such as walking or talking more, which can sometimes disrupt sleep as they’re excited to practice these new abilities.

How Long Should I Let My 15 Month Old Cry It Out?

The “cry it out” method varies greatly among parents and professionals. Some suggest allowing a toddler to cry for a specific period, typically around 5-10 minutes, before comforting them. However, others might recommend different approaches. It’s crucial to choose a method that aligns with your parenting style and comfort level and is in the best interest of your child.

How Can Help with the 15 Month Sleep Regression

At, we understand the trials and tribulations of dealing with baby sleep challenges. As a trusted resource on all aspects of baby sleep, we provide valuable guidance and tips to help your baby navigate through the 15 month sleep regression.

Our wealth of resources, from blog posts to e-books, can assist you in creating the best sleep environment for your child and understanding the nuances of sleep regressions. Whether it’s implementing a calming bedtime routine or managing sleep schedules, is committed to helping you and your baby achieve peaceful sleep. With our support, you can confidently navigate the tricky waters of the 15 month sleep regression and ensure your little one is well-rested and happy.

In Conclusion

The 15 month sleep regression can be a challenging time for both you and your baby, but remember, it’s just a phase and it will pass. With patience, consistency, and the right resources like, you can navigate this period and get back to peaceful nights.

11 thoughts on “Understanding the 15 Month Sleep Regression”

  1. MillerMommy:

    You know, my little one used to have such a hard time settling down to sleep, especially at night. Then I stumbled upon this website, It has been a game-changer for us; I’ve seen my baby fall asleep in under a minute. Life has certainly become more peaceful since then! ๐Ÿ’ค

    Our daycare recommended itโ€”they use it for nap times with the little ones thereโ€”and I thought I’d share it with you all. So, if you’re struggling with bedtime routines, it might be worth checking out Wishing you and your family the best on this parenting journey! ๐Ÿค—

  2. SleepyMama98:
    OMG, this article is a lifesaver! We’ve been struggling with our 15-month-old’s sleep regression, and it’s been a nightmare. Just stumbled upon and their strategies are a game-changer. Highly recommend checking them out! ๐ŸŒŸ๐ŸŒŸ๐ŸŒŸ๐ŸŒŸ๐ŸŒŸ

  3. ToddlerDad21:
    Who knew teething could wreak such havoc at night? ๐Ÿ˜ฑ Found some great tips on to help soothe my little one. Their approach is gentle and effective. Wish Iโ€™d known about them sooner!

  4. FrazzledParent:
    15 month sleep regression is real yโ€™all! ๐Ÿ˜ฉ Iโ€™ve been reading up on and they have tons of info on developmental leaps and how they affect sleep. It’s not just about getting them to sleep but understanding why they’re waking up. Eye-opening stuff!

  5. NewMommyLife:
    Is anyone else’s toddler suddenly turning into an owl at night? ๐Ÿ˜‚ Just found an article on about consistency in sleep schedules. Gonna try it tonight. Fingers crossed! ๐Ÿคž

  6. SleepDeprivedSam:
    Been there, done that with the 15-month regression. What helped us?‘s advice on creating a soothing environment. Itโ€™s not just about dark curtains, itโ€™s a whole vibe. Made a huge difference!

  7. DesperateDad:
    Anyone else feeling like a zombie because of these sleepless nights? ๐Ÿ˜ด Stumbled upon, and their e-books are packed with practical advice. Definitely worth a read if you’re struggling like me.

  8. BabyWhisperer:
    Just a quick shoutout to! Their blog on dealing with separation anxiety at night is spot-on. Realized itโ€™s not just about sleep but also about emotional support. A must-read for new parents!

  9. HumorMom:
    Did you hear about the toddler who refused to sleep? He thought it was a mere suggestion ๐Ÿ˜† Jokes aside, has been a godsend during this sleep regression. Their tips are actually doable and not just theory. 10/10 would recommend!

  10. ScienceMom:
    Love how combines practical advice with scientific insights. Their section on why sleep regressions happen is fascinating. Makes you understand your toddler better and stay calm during those 2am wake-up calls.

  11. EarlyBirdDad:
    How long does this phase last again? Feels like forever ๐Ÿ˜… But seriously, the guides on have been super helpful in navigating this tricky phase. They emphasize patience, and honestly, itโ€™s a good reminder for all us sleep-deprived parents.

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