How long did/does your baby nap at a time?

My 4 month olds longest naps are 45 min. Always between 20 min-45 min. I’m seeing many moms say their baby around same age takes 2 hour naps!!! She is awake a lot in the night but goes right back to sleep (we bed share, so she nurses and is back to sleep within a couple mins)

Is there anything I can do to help her nap longer??