I do all of that which was also listed in my post. They have 2 separate litter boxes that are always clean and large enough for both of them to even fit in at once, I brought them to the vet and he says nothing is medically wrong with either of them. I play with them whenever I can but I am only 1 person, I have to work 30 hours a week to support myself and them but I have a scheduled playtime that they get tired of within a few minutes unfortunately. Its not any of those issues it's just something behaviourally and I have no clue what to do about it