I have tried really hard to get Coke on the lowest protein diet possible. Unfortunately he hates the prescription canned food (6% protein). Prescription dry food is 20% protein. Regular off the shelf dry cat food is 29 to 42% protein. I tried everywhere to find canned cat food that was the lowest possible.
After trying numerous brands, mixes etc etc. I am compromising and giving Coke his old favorite canned food which is 10% protein. I figure that and the prescription dry will average out to about 15% protein. (Which is half what I used to give him)
It would be great to get things lower, but if I can't get him to eat the point is moot.
Therefore it is back to what I use to give him as a treat, but now it's his main dish. LOL