Our cat was recently confined about two weeks ago because his crea was 4.2. The vets made series of test like pth test, thyroid test, xray, calcium test and they confirmed he has hyperthyroidism. he was scheduled for surgery but the vets postponed it because of major risk because of his high crea and he is also hypertensive and his bp is being monitored at home. His xray also shows kidney stone he has hypercalcemia and he also has digestive enzyme insuffiency. He is being treated at home right now and his new blood result showed his crea is down to 3.07 and his calcium level is close to normal. His medication are ipakitin mixed with 3 ml water, nefrotec, methimazole, enalapril, and pancreatin. The problem is he don't want to eat much of kidney diet. Can you recommend the best food alternative for his case? He has appetite but is losing weight