At 12 weeks old, babies become more alive! Their little personalities begin to blossom and watching them take in the world can bring so much joy. When you baby reaches the three-month mark, you may see a shift in their sleep. Understanding what a 12 week old sleep schedule should look like can provide much-needed relief as you see your little one through this phase. 

Three month old babies typically sleep between 14-17 hours in a 24-hour period, incorporating both nighttime sleep and naps. If you haven’t yet, creating a nap and bedtime routine can really help foster a foundation for sleep. Let’s dive to our three month old needs, sleep schedule, and more! 

12 Week Old Sleep Schedule

As babies approach the 3-month milestone, their sleep cycles begin to undergo significant changes. So many parents will say that their newborn was sleeping a solid 4-6 hour block and now is waking every 45-60 minutes. Although sleep deprived, it is totally normal. Around this age, many infants start to show variations in their sleep patterns as their internal body clocks, or circadian rhythms, begin to develop. Circadian rhythms will actually HELP your infant get better sleep. If you haven’t considered sleep training, this regression can be a great time to start. 

Understanding 12 Week Old Sleep Development

This transformation in sleep can result in longer nighttime sleep stretches and more extended periods of nap-taking during the day. These shifts indicate babies are approaching sleep cycles that resemble those of adults. Your infant will start to have light and deep sleep cycles. Some babies adapt to this change easily, while others require support. It is totally normal either way. A few signs to watch out for:

– Transitions to overnight sleep (for better or worse)

– More defined nap patterns taking shape during daytime

– A growing ability to self-soothe or fall asleep independently

– Unique adjustments needed for each child’s sleep needs

What are Developmental Milestones for a 3 Month Old?

The fascinating journey of a 3-month-old includes remarkable developmental milestones that span physical, cognitive, and social domains. During this period, infants exhibit improved control over their head movements and can raise their heads and chest during tummy time, strengthening their muscles and honing their motor skills. Additionally, their ability to follow moving objects with their eyes and recognize familiar faces marks the beginnings of visual and social engagement.

This stage also witnesses the emergence of early communication skills, with babies starting to coo and produce other pleasant sounds, forming the foundation of language development. The heightened curiosity and the newfound interest in their surroundings are evident as infants become more engaged with their environment. These milestones are typically indicative of a healthy developmental trajectory and can vary slightly from one baby to another. Consider the following milestones as typical markers of progress:

– Enhanced head and upper body strength

– Ability to track objects and people visually

– Recognition of familiar sounds and faces

– Starting to vocalize with cooing or babbling

– Increased engagement and curiosity about their environment

How Much Should a 3 Month Old Sleep?

Understanding how much sleep a 3-month-old needs can be vital for fostering healthy sleep development and keeping your baby happy. Typically, a 3-month-old baby requires approximately 14-17 hours of sleep within a 24-hour cycle. This sleep encompasses both nighttime rest and daytime naps. By now, most infants start extending nighttime sleep periods, stretching to about 4-6 hours at a time. This can be a delightful change for parents who’ve been up frequently at night since their newborn’s arrival.

Daytime naps remain essential for rejuvenation, generally consisting of 3-4 sessions lasting between 30 minutes to 2 hours each. A structured bedtime routine can effectively signal to your baby that it’s time to wind down and prepare for sleep, promoting better sleep quality. However, it’s important for parents to stay responsive, as every baby’s sleep needs and patterns can differ significantly. To encourage optimal sleep, consider these approaches:

– Aim for 14-17 total hours of daily sleep

– Incorporate 3-4 naps lasting 30 minutes to 2 hours each

– Establish a calming bedtime routine to aid sleep transition

– Be flexible and respond to your baby’s unique sleep cues

– Adapt to individual variations in sleep patterns

What is a 12 Week Old Sleep Schedule Example?

At this age, most infants demonstrate a more consistent sleep pattern. While baby sleep schedules do vary from day to day, you will start to see a pattern in what works best for your child. Typically, a 3-month-old will total about 14–17 hours of sleep per day. This includes daytime naps. If your child is sleeping 12 hours overnight, that would leave a good 4 hours of sleep for naps during the day. Understanding what your child’s sleep needs are will help you make decisions during the day and overnight. Every child has different sleep needs! It takes time to figure out what is best for your child.

Flexibility remains key, as you need to adjust the schedule based on your baby’s evolving needs and any developmental shifts they’d encounter. A typical awake or wake window for your 12 week old will be between 75-90 minutes. A sample schedule may look like this:

8:15/8:30 First Nap 

11:15/11:30 Second Nap 

Nap three should still occur about 75-90 minutes after waking from nap two. 

Nap four should still occur about 75-90 minutes after waking from nap three. {I would only do an optional nap 4 for another 2-3 weeks, then shift her over to 3 naps. I would do a 4th nap if we’re finding that she is ending her 3rd nap significantly early (before 3ish)}.

12 Week Old Sleep Schedule Example:

• Feed upon waking (between 6am and 7am) 

• 8am – Feed (prior to first nap) 

• 8:15/8:30am nap 1

• Feed upon waking from first nap OR 10am if she has woken prior to 10am (don’t feed her any sooner than 2 hours apart)

• Feed before second nap (around 11)

• 11:15am/11:30am nap 2

• Feed after second nap OR 2pm if she has woken prior to 2pm 

• Third nap – aim to have her ASLEEP 90 minutes after waking from nap 2 (60 minutes if nap 2 was under one hour)

• Feed after third nap 

• Fourth nap – aim to have her asleep 90 minutes after waking from nap 3 
• Feed after fourth nap

• Feed during bedtime routine 

• Bedtime should be 75-90 minutes after waking from nap four but no earlier than 5 p.m.

Remember, the above “schedule” is a goal and it is certainly not expected. This is a marathon not a sprint!

Many babies are hungrier in the evenings. If your baby will tolerate it, I would try to offer an extra feeding in the evening for a few weeks.

Creating a balanced feeding and sleep schedule for a 3-month-old enhances the symmetry of your baby’s day, promoting a healthier lifestyle. Changing sleep patterns in a 12 week old can signify exciting growth and development. Sleep regression are typically developmental progressions. Embrace the evolving nature of your 12 week old sleep schedule with patience and flexibility, knowing that adjustments facilitate well-being and growth for everyone.

Sleep Shore Sleep Consulting

Is your little one having difficulty self-soothing for naps and overnight? If your child is unable to fall asleep, stay asleep, or wake up at a normal time, it may be time to consider sleep training. Sleep Shore offers personalized solutions for each unique sleeping situation to get your little one on track- whether they’re a newborn, infant, or toddler. We also offer in home sleep training services in the Boston, Massachusetts, Central Michigan (Midland, Clare, Mt. Pleasant) and Traverse City, Michigan. Sleep training offers babies and children with the skills to fall asleep on their own so they can wake up feeling more well-rested- and in turn, you’ll feel more energized, too! See what this mama had to say about our sleep services below: 

“Thank you Molly for giving me my life back. Our 3-month-old would only sleep for 20-30 minutes at a time at night, and only do contact naps during the day. It made all the difference not only having a very detailed sleep plan for our daughter, but being able to communicate constantly with Molly. It was great to bounce things off of her and get advice, especially when I was in the trenches e.g. she’s not falling asleep and it’s been an hour, what I do next? I also love that she set me up for success, even after the two week consultation was over so I can evolve my daughter’s sleep needs as she grows and when things aren’t always going as planned e.g. if she gets sick, how do I adapt her sleep needs? If you’re struggling getting your child to sleep, just work with Molly. It is so worth it. I wish I had done it with my first child instead of suffering through!”

Mom of a Three Month Old