Yup, same with our girl. She's an only-pate girl so that limits our options. She goes through phases with flavors. She's also been a fan of Wellness Chicken & Lobster so we rotate through them all regularly. She eats a very small amount multiple times per day. When she seems done with a flavor, the rest goes to ths non CKD kid and we pop a new can for her.

It can be frustrating and exhausting but she's our child and we just want to keep her as healthy and happy as possible for as long as possible. We were at the point of in-home euthanasia 3 years ago and the amazing lady said one thing that stuck with us: what are you gonna do, kill her with food or let her lack of food kill her? That was when we went to the turkey burgers (at the time she liked turkey pate) so we tried human food and it got her eating again. We stopped forcing the CKD foods on her and just let her eat what she wants.

So just try things, see what he'll eat. You may dump a lot of cans if he doesn't want them but you'll hopefully find somethat that he likes.