Baby sleep

Hi I need some help or advice. My baby is about to be 5 months on the 12. I’ve learned about Sids and honestly it’s been most my anxiety at night when I put my baby to bed. Because now he’s rolling over in his sleep onto his stomach and idk if that’s safe or okay but it’s just difficult because when I try to roll him back over he wakes up or like if I been sleeping n wake up he’s on his stomach n idk how long he’s been like that and idk what to do.