Mel, we are 6.5 months here, and only roll from our belly to back and don't sit well at all. My reason for the sitting is we ripped up all our carpet and I wasn't keen on DS learning to sit and fall over on hard floorboards! But we got a rug and are starting to practice it. anyhoo, back on topic, Miss M is able to amuse herself, and like you said, is doing the swivel movements on her back, and lifting her legs up... she sounds pretty chilled out instead of racing through to check off her list of things to do at a rate suitable to her daycare director. Maybe she is in deep thought about how to approach it all and do it properly first go

Nic