LO is 4 months old next week and he tends to only take 20-30 min naps, whether its in his crib, rock n play, etc. He wakes up crying but won't go back down.

Is this a common 4 month old occurence? My ped says it is but so many moms on this blog have their kids on what seems to be a great schedule with long naps by 4 months.

I can't help wonder if I'm doing something wrong. I try to put him down when I see sleepy cues, turn on white noise, etc. I can get him to fall asleep, but he always wakes up after a short time. His naps don't even get to the 45 min intruder, which I would welcome at this point.

Am i alone? (please tell me I'm not)