Baby schedule

My little guy will be 13 weeks old tomorrow(2/14/2020)

We have a pretty good nighttime routine and wake up time. We have some off nights but typically he is in bed between 830 and 900pm, wakes between 4-5am for a feeding then is up for the day between 8 and 830am.

The only issue is we can’t seem to figure out a daytime schedule. We have tried eat,play, sleep

eat,sleep, play and nothing seems to get him on a daytime schedule. About 75% of the time he will go down for his morning nap about an hour and a half after he wakes and will sleep an hour and a half to two hours. The rest of the day is a crap shoot.

He has been taking 2-4 naps in his crib from 6 weeks old. It’s within the last couple weeks it’s been a struggle.

any help would be appreciated!