I can't give you good news, Danny, as we have lost a cat at just 9 with CRF, but others here are much more knowledgeable on the subject and have had more cats than I do. I just wanted to welcome you. I am from Australia so where you live doesn't matter, just don't think anyone is ignoring your post if there is a time difference between there and Canada.
I'm sure you will get helpful advice shortly.