Could really use some advice about this as I’m not sure if it’s safe or not.

My little one still sleeps in her Moses basket next to my bed and a few days ago she learnt how to roll over from back to belly. Well this morning she woke up about half 7 and I let her settle herself back to sleep without disturbing her because I knew it was a bit early for her to wake up and I’ve just looked over at her and she’s somehow managed to roll over onto her belly in her basket!! Is it safe her sleeping on her front, she’s only just turned 5 months and I just want to make sure that she’s safe to sleep this way.