So our kittens are about 8 weeks only now and haves lots of energy. We are very glad we got two, because they wear each other out. But at night it is quite hard because even though we will play them till they will just sleep threw the toy sounds and are just passed out. But by 5 A.M my little female is wakong her brother up to play. I sleep threw it most of the time but my poor boyfriend can't. Is there anyway to make them sleep longer? Or will they grow out of this?