Hi,
My dd #2 is 4mo and has lots of time on the floor both on her back and tummy and is showing no signs or rolling yet. With dd#1 I had all the time in the world and spent a lot of time showing her how and rolling her. I don't do this with dd#2 and don't know whether I should be or just let her be and she will work it out in her own time. DD#1 was rolling by this time so I'm not sure.
Thanks,