Is he getting enough sleep?

St

13 months and wakes up between 5:30-6:30 takes a 1 hour nap at 1pm and in his crib asleep by 8:30. I feel like he needs more sleep bc night time is a mess but he won't sleep long for his nap, won't go down in the morning anymore, and if I put him down for even a power nap after his 1 hour he won't sleep at night. He almost never wakes up during the night anymore which is nice but our afternoon/evening is rough. Any advice to get him to nap longer? Or is this enough? What did your kids do around this age?