Please help. I think we rushed the process of introducing a four month old kitten to my 10 month old cat. We separated them for a week and now no matter what we do the new cat continues to attack the older cat and they've been together for almost two months. Both cats are declawed so they are not hurting each other, but the younger one wants to play way too rough. Is it too late to reseparate them and start the introduction process over? The older cat hates the new cat and stays hidden all the time now. Please help our cats learn to get along.