Newborn only likes sleeping on side or stomach

Ri

She’s three weeks old, and when the going gets tough, she’ll only calm down if I lay her on her side. She’s already rolled in her crib and I have to lay her arm out so she doesn’t go face first. But when she is in her side she is so calm and peaceful. There’s so much about SIDS risk but this is how she is comfy. Any advice to keep baby safe on her side?