3 month old naps

Kat
Hi ladies,
Just after some advice. My 3 month old used to be a great day napper. Now each time I put him down he's up within 30 mins. Sometimes screaming! Sometimes I can soothe him back to sleep but sometimes that it it! Nights seem to be fine and when he feeds during the night he can settle himself. Anyone going through the same thing? Any advice to stop the waking?