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15 Month Sleep Regression Causes, Symptoms & Solutions

15-month sleep regression is a common phase that can disrupt your little one’s once peaceful sleep routine.

Over 70% of toddlers experience some form of sleep regression around the age of 15 months. It means that you are not the only one who is facing this problem.

So , don’t take too much tension about this problem and focus on 15-month sleep regression causes, symptoms and solutions.

In addition, We understand the challenges parents face during this period. Let’s understand the 15-months sleep regression and practical tips to help your child through it.

Image depicting a distressed child experiencing sleep regression, seen crying during disrupted sleep.

What Is The 15-Month Sleep Regression?

Photo of a  child sleeping on a table while eating, illustrating the challenges of sleep regression.

At around 15 months of age, many toddlers experience a sleep regression, characterized by frequent night awakenings, difficulty falling asleep, and shorter naps.

Moreover, while each child is unique, this phase is believed to be associated with significant developmental milestones, such as language development and increased mobility, which can affect their sleep patterns.

Related: 10 Month Sleep Regression

Causes Of Sleep Disruption At 15 Months

Developmental Changes

Cognitive and motor development at 15 months can lead to increased restlessness and disrupted sleep patterns.

Separation Anxiety

Growing awareness of separation from caregivers can result in night waking and difficulty falling asleep.


 Emerging teeth can cause discomfort and disrupt sleep.

Inconsistent Routines

Alterations to daily schedules or bedtime routines can influence the quality of sleep.

Nap Transition

Transitioning from two naps to one can affect sleep patterns and lead to overtiredness.

And keep in mind Baby witching hours as well it can also be the possible cause of it.

See also: 14 Month Sleep Regression

Toddler Bed Transition Effect On 15 Months Sleep Regression

At approximately 15 months of age, some parents choose to shift their child from a crib to a toddler bed. Although this represents an exciting developmental milestone, it can potentially lead to disruptions in sleep patterns.

To facilitate a smoother transition, parents can follow these helpful suggestions:

  • Set up a cozy sleep space with their beloved toys and soft blankets.
  • Set consistent bedtime routines to signal when it’s time to sleep.
  • Use safety rails to prevent falls and provide reassurance.

See also: 13 month sleep regression

Key Symptoms Of The 15-Month Sleep Regression

Photo of a  child sleeping on a table while eating, illustrating the challenges of sleep regression.

Identifying the signs of sleep regression can be vital in managing your toddler’s sleep disruptions. Look out for the following symptoms:

  • Frequent night awakenings
  • Refusal to go to bed
  • Increased fussiness before bedtime
  • Shorter daytime naps
  • Fluctuations in hunger 

Related: 16 Month Sleep Regression

How Can You Help Your Baby In 15 month sleep regression?

Image depicting a parent soothing their baby to sleep, exemplifying ways to assist the baby through the challenges of the  sleep reversion, as discussed in the topic.

To support your baby during the 15-month sleep regression, focus on creating a conducive sleep environment. Ensure their sleep space is cozy, softly lit, and tranquil, considering the use of white noise machines to minimize disturbances.

Another helpful step is hiring a nanny or babysitter who can provide care during your child’s sleep, offering an extra layer of assistance.

Simultaneously, establish a soothing bedtime routine that involves activities like reading stories, gentle rocking, or singing lullabies.

Consistency in these routines is paramount, reinforcing positive sleep associations and contributing to a more restful sleep experience for your baby.

Related: How To Get Baby To Sleep In Bassinet?

Recommended Sleep Hours While Facing 15 Month Sleep Regression

Emphasizing the importance of sufficient sleep for toddlers’ overall health and development is essential. On average, a 15-month-old child should aim for approximately 11 to 14 hours of sleep each day, including daytime naps.

Furthermore, promoting your child’s growth and well-being relies on ensuring they get the right amount of sleep.

Related: Baby Fights Sleep

Daily Recommended Sleep Hours For Toddlers

Age (Months)Total Sleep Hours (Per 24 hours)Daytime Nap HoursNighttime Sleep Hours
15 Months11 to 14 hours1 to 2 hours9 to 12 hours

Strategies For Navigating The 15-Month Sleep Regression

Navigating the 15-month sleep regression requires a thoughtful approach. Limiting screen time before bedtime is crucial, as the blue light emitted can disrupt melatonin production, affecting sleep.

Ensure your child gets enough daytime rest to prevent overtiredness, a potential exacerbator of sleep regression.

Maintaining a calm and patient demeanor is essential during this temporary phase, avoiding the introduction of new habits that may be challenging to break later.

Respond consistently to night wakings, offering comfort without engaging in stimulating activities.

Consistency remains key throughout this period – stick to established routines, stay patient, and remember that with time and effort, your child will likely return to their usual sleep patterns.

Related: 24 month sleep regression

How Long Does 15 Month Sleep Regression Last?

Image of a serene, soundly sleeping child, after the lasting of sleep aggression.

The duration of the 15-month sleep regression can vary from child to child. Ordinarily, this stage can endure anyplace from weak  to a couple of months.

Additionally, it is essential to remember that each child’s development and sleep patterns are unique, so the duration of the regression may differ for each toddler.

Moreover, during this period, it is crucial for parents to remain patient and consistent with their bedtime routines and sleep strategies to help their child navigate through the regression with ease.

Furthermore, if the sleep disturbances persist or become a cause for concern, it is advisable to consult with a pediatrician for further guidance and support.

Related: Sleep Regression 6 Months

How To Get 15 Month Old To Sleep Through The Night?

To help a 15-month-old sleep through the night, ‘Establish a regular bedtime routine incorporating soothing activities like reading and singing.

Stick to a regular bedtime and ensure a comfortable sleep environment with darkness and quietness. Encourage daytime naps to prevent overtiredness.

Additionally, avoid stimulating activities before bedtime, limit sugary foods, and respond to nighttime waking in a comforting but low-key manner.

Furthermore, gradually reduce nighttime feedings if necessary, and be patient and persistent in establishing healthy sleep patterns without relying on rocking or feeding to sleep.

FAQs About 15 Month Sleep Regression

How do I fix my 15 month sleep regression?

To fix 15-month sleep regression, maintain a consistent bedtime routine, create a comfortable sleep environment, encourage self-soothing, and respond calmly to night awakenings.

Why is my 15 month old sleep getting worse?

At 15 months, sleep can worsen due to developmental changes, separation anxiety, teething, or inconsistent routines. Sleep regressions are common and temporary phases in a child’s growth.

What is the teething sleep regression?

Teething sleep regression is a temporary phase around 15 months when teething discomfort can cause increased night waking, fussiness, and difficulty falling asleep in babies. 

How long does teething sleep regression last?

The teething sleep regression typically lasts for a few weeks to a few months, depending on the child and the intensity of teething discomfort.

Does sleep regression fix itself?

Yes, sleep regression is usually temporary and fixes itself as the child’s developmental phases stabilize, and they adapt to new changes in their sleep patterns.


In conclusion, the 15-month sleep regression is a common and temporary phase in a toddler’s development. Having a grasp of the different causes and symptoms can assist parents in navigating through this challenging period.

In addition, by implementing consistent bedtime routines, creating a sleep-conducive environment, and offering comfort during night awakenings, parents can support their child in overcoming sleep disturbances.

Moreover, remember that each child is unique, and patience is essential as they grow and adapt to new developmental milestones. With time and dedication, both parents and toddlers can emerge from this phase with improved sleep patterns and a better understanding of their sleep needs.

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