Hi... Your baby may be able to kick himself over, from his tummy to his back, as early as age 4 months. It may take him until he's about 5 or 6 months to flip from back to front, though, because he needs stronger neck and arm muscles for that maneuver.
My baby flipped from tummy to back at around 2 months plus.. currently 3 months old, waiting for her to flip from back to tummy....
Mine abt 3 months plus
2.5mths
Around 4 mths(:
Around 4 month
4 months
4 months
4 month
2-3mo