2 week old side sleeper

My daughter is exactly 2 weeks old and she sleeps on her side. I'll put her down on her back and within a couple minutes she's laying on her side. If she's awake she'll stay on her back but if she's sleepy she'll roll into her side.

I asked the pediatrician about this and she said that babies this young tend to do this and she'll grow out out of it. Still has me a little concerned since she should be on her back. I have an owlet and I check it periodically and she's getting enough oxygen and her heart rate is perfect. Is there anything I can do to try to get her to sleep on her back more?

We have a swaddle sleep sack that she likes to be in but lately it's been warm in our room so I opted for the "wingless" sleep sack since she was getting too toasty. She sleeps on her side in the swaddle one too.