Fortunately, my regular vet is very good. I'd gone to a special clinic to get an evaluation on the I-31 thyroid procedure for The Great Pumpkin, but he isn't a good candidate with the renal issue. Now they want me to give him sub-cutaneous fluids myself 2-3 times a week. He's a very timid cat and if he associates me with Needle Time, he'll just bolt whenever he sees me.
I think that I'd rather have his last few months be comfortable, and when he starts failing, just put him down. Keeping him alive for a little extra time by chasing him around the block (he's an outside cat) to pin him down and stick him with a needle will make us both miserable. Ugh, cats getting old sucks.