Scared of her sleeping

So my daughter was born at 4 pounds, so I feel really nervous about her. And tonight’s her first night home. I tried to put her in her bassinet and she instantly rolled onto her side. So I took her out. When we were in the hospital, I put her in my shirt and did skin to skin for her to sleep. And she did okay.

Now that we’re home, how can I make sure she’s sleeping safely? Do I swaddle her? Or can she keep doing skin to skin with me? I don’t know what to do. Please help me. I’m so scared.