My DD who is nearly 7 months is now rolling both ways. This means she now does it in the cot too!! I have put her in three times today and everytime she has played and played and played, rolling around. She has shown tired signs and needs her sleeps but she's only had 2 45 mins sleeps today compared to normally having 2 1 1/2 hr sleeps as well as a 45 mins one. Is this just a phase cause I don't know how you stop them playing!