anyone else’s baby rolling??

as a ftm this is all new to me and i don’t know when everything “normally” happens. when i look online everything says different times. i had my son on july 29th, he’s 12 weeks and one day today, but he’s been rolling since the end of september. at first i thought it was just a one time thing but now every time we do tummy time he starts rolling over, i’ll put him back on his tummy and he’ll keep doing it. is anyone else’s baby rolling over?