Newborn keeps putting her head to side

Alison, 🌈 👶🏻 born 7/26/19

My newborn is two weeks old and I worry about sids constantly. I swaddle her and put her in the halo sleep sack but for whatever reason lately she’s been going on her side. Her whole body doesn’t go to the side mostly her head does. Is this safe??? I find myself moving her to get her head straight and making sure her body is flat on her back.