What age did your baby fully roll over

Emma • 27, London. Work in private childcare as deputy manager. Healthy child practitioner and fire officer.

My son is almost 7 months and can roll over on his back if laying on his tummy but he can't yet roll from his back on to his tummy. Should I be worried? I know every child is different but I work in early years so I kinda know what age roughly children should be doing most things. I know by his age children should be able to roll from front to back and back to front and should soon start crawling.

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