at about a week. i honestly didnt even know anything about tummy time until her doctor told me about it at her first appointment.
my little guy got some right away. almost 2 weeks old and he's starting to hold his head up and scoot with his back legs
since they're born, the earlier the better :)
We do tummy time when he's laying on my tummy. I'm not ready for tummy time on the bed or floor yet. My boy just turned two weeks today.