Putting baby down calm but awake

Any tips? My 3 month old has been sleeping well the last few weeks, generally 6-8 hours in the first stretch. I feed him in the bedroom, dark and with white noise on and then put him down. He generally falls asleep while eating and then I put him in his crib. The past few days he’s been up every 1-2 hours unless he’s held, I think it may be the “4 month” sleep regression. If I put him down awake he screams, any tips to help him fall asleep on his own?