My little girl is about a month and a half old. When I put her to sleep one night I put her on her tummy... When she woke up she was on her back. I couldn't remember if I had gotten up in the middle of the night and put her on her back or not so I thought nothing of it. Later that night after she woke up and ate, I put her back down, again on her tummy, and within a minute she was on her back... I couldn't believe it! And she not only did it once but three times! And here I though babies weren't supposed to do that until they were at least 3 months old.
My 10 week old began rolling from belly to back at 7 weeks and from her back to belly at 9 weeks. At birth she held her own head up and was born alert and curious. Her muscles are strong and she seems to have a natural urge to be on the go. Babies all develop in their own time and when they're ready. Every single baby has special qualities and bring joy to their parents regardless of when their milestones are reached