Tummy time

Absolutely. Also remember being on your chest is also tummy time x

Yep. Not a problem at all.

Yes, although like @Louise said, on your chest counts, and I feel like we spent most of maternity leave with him in my arms/chest. We still did tummy time on the floor with a few toys and books. He did figure out how to roll over easily when on the floor, unilateral clubfoot, so he'd lift up his cast leg and start moving his body a little and gravity did the rest with the weight off the cast and would move him. He was so happy he could do it, but then once he was put of casts couldn't figure out why he couldn't roll anymore and had to relearn how to do it again 😅

Yeah mine rolled at 6 weeks (2 weeks after he got his first cast, lcf) but never forgot. Definitely can still do tummy time!