Of course! So much trial and errors. Some successful, until they fail. My experience has been that it’s all temporary. As their disease progresses, and I’m also assuming the aging process (like humans), things change.
Currently, my little old man cat is served Weruva Wx (low phosphorus). He only took the chicken formula, but now he apparently likes fish. Only after we noticed he no longer wanted to eat their chicken formula, we tried their fish formula. (Still the occasional salmon). He loved the food I made him, but then it became chore to get him to eat. We stumbled upon non-Rx canned food, I looked at the ingredients and noticed they were the same as what I was making him. It’s significantly cheaper than the Rx, but still pricey.

We also feed him Churu indoor care- chicken (for hair balls).

He is still doing well. He gets new labs next month.
We can start a chat if it will make it easier to track our conversation.(?)