Three weeks in—can you believe it? You’re slowly getting the hang of this parenting thing, even if it still feels messy and unpredictable. By now, you might notice tiny hints of routine peeking through the chaos.
Your baby is still very much a newborn, but they’re becoming just a little more awake to the world—and to you.
What’s Happening with Your Baby in Week 3?
They recognize your voice and smell. You’re their favorite person in the whole world.
More awake time. You’ll get small “windows” of quiet alertness, perfect for talking and bonding.
Crying may increase. Around 3 weeks, many babies hit a fussy peak (sometimes called the “witching hour”). It doesn’t mean you’re doing anything wrong.
They’re stronger. You might notice more head-lifting during tummy time.
This is also the week some parents say, “Okay, this is starting to feel a little easier… sometimes.”
Feeding: Still On Demand
Your baby’s stomach is growing, but they still need frequent feeds.
Breastfeeding? Your supply is now adjusting to their needs. Growth spurts can still happen, making it feel like you’re feeding all day.
Bottle-feeding? They may start finishing a little more each feed—still totally normal to vary.
If you’re feeling overwhelmed by remembering feeds and diapers, check out our blog on Best Baby Tracker Apps to see if one could ease the mental load.
Sleep: The 3-Week Reality
You’re still in survival mode when it comes to sleep.
What’s normal this week:
Longer stretches at night (if you’re lucky, 3–4 hours).
More cluster feeding in the evenings, which can mess with sleep.
Your baby still prefers being held for naps—this is developmentally normal.
You cannot spoil a 3-week-old by holding them too much. They simply need the closeness.
Your Body & Emotions
You’re 3 weeks postpartum, which means:
Physical recovery is continuing—bleeding is slowing, stitches (if any) may feel better.
Hormones are still up and down, which can make you emotional over the smallest things.
You might start craving a little you-time, even if it’s just 10 minutes alone with a cup of tea.
And yes, it’s okay to miss your “old self” sometimes. You’re still you—just a new version.
The Famous 3-Week Fussiness
Many babies go through a fussy peak around 3 weeks old. They cry more, want to feed more, and seem harder to soothe.
What can help:
Wearing your baby in a wrap or carrier
Gentle rocking or white noise
Going for a short walk (fresh air can help both of you!)
It’s temporary. This phase usually eases by 6–8 weeks.
Quick Pediatric Check
Some babies have another weight check around this time. If not, keep an eye on:
Enough wet diapers (6–8 a day by now)
Steady weight gain
Normal baby poop changes (it can shift in color and texture—totally fine)
A Gentle Reminder
You’ve made it three weeks. You’ve learned your baby’s little quirks. You’re figuring out how to meet their needs—and yours.
It’s still exhausting, but you’re doing better than you think.
So cuddle your baby a little longer, breathe through the tough moments, and remember: this stage won’t last forever.