4 month mark changes things??

Hey mamma,my son is 3 months 3 weeks old.he had been sleeping in afternoon for a nap for about 2 hours and took 30 min naps in morning and evening .he sleeps at 9pm and wakes for 3 feeds before finally waking up at 7am.since last 4 days he is frequently feeding in day (like 2-3 more feeds) and resisting naps ,even when napping would wake up in 15-30 min.luckily uptil now night time sleep is ok.is this growth spurt or sleep reggression?would help to know what i am dealing and how i can mayb help myself..