Same here Nikkie! The girls are constantly climbing over the top of each other, and now they are both standing - knocking each other over. It's never ending! I don't really have any suggestions unfortunately, but I do say 'Gentle, gentle' a lot when they are getting deliberately rough - C loves to slam her hand down on M's head, all while saying "Ahhhh! Ahhhh!" so it's looks like she is giving her love, when she is actually just being cheeky and hitting.