4 month old only sleeps 8-10 in a day

He will not nap ! Maybe once for 30 min - I worry he's not getting enough sleep. He will sleep 5-6 hours eat then 2-3 hours and then about 1-2 hours at some point in the day but that's it ! Anyone else ? Please don't comment if ur kid is sleeping great unless u have tips - I'm asking if anyone else is going through this too