why 30 to 45 minutes
That is about the length of one baby sleep cycle. Coming to the surface at the end of a cycle and not yet knowing how to link into the next one is the default at this age, not a problem you created. The baby wakes, is not sure how to continue, and that is the nap.
why chasing the nap goes nowhere
This is the frustrating part. The nap itself is downstream. The thing you can actually influence is the wake window, the stretch of awake time before the nap. Too long and they go down overtired and wake early and cranky; too short and they were not ready to sleep and fight it. Adjusting the timing in front of the nap sometimes fixes the nap by accident, while working on the nap directly almost never does.
the part that takes the pressure off
Messy naps and bad nights are not the same problem, and plenty of babies sleep beautifully at night on days that look like chaos. The goal with naps at this stage is predictability and a decent mood, not hitting a magic length. A nap in the carrier still counts. One messy day undoes nothing.
Feeds, growth, and discomfort stay with your pediatrician, always.
quick answers
Why are my baby's naps only 30 minutes?
That is about one sleep cycle. Waking at the end of a cycle without linking into the next is normal at this age and not something you caused.
How do I lengthen my baby's naps?
Work the wake window before the nap, not the nap itself. Nap length is downstream of timing, so fixing the window in front of it is the only reliable lever.
Are short naps bad for my baby?
Not necessarily. Short naps and bad nights are different problems. The goal is predictability and mood, not a specific nap length.
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