Baby boy is 3.5 months - 4 months in a few weeks.
he’s never been great at tummy time - hates it - but can lift head well and has good control.
a week to ten days ago I popped him on his tummy and he rolled to his back. He done this a few times consecutively and again the following few days however now when I put him on his tummy he won’t roll. Makes no attempt. Is this normal to suddenly stop?