I agree with Fleur, 'floor' time is a good way of looking at it. Now that she can roll, she will start to enjoy it all more, and once she starts rolling onto her tummy you'll be amazed at how often she choose to do it LOL! Mind you, DS2 is so funny, he rolls both ways easily, but often rolls onto his tummy and then cries because he can't go forward! He's desperate to crawl, but is nowhere near strong enough (he's only 5.5 months corrected). He always hated tummy time (reflux baby too) but has definitely got better with it in the last month or so. And I will confess to being a 'bad mother' who just didn't bother making him do it, especially not on the floor. But he's getting there anyway