My cat was also just diagnosed with kidney failure. I was wondering what medications and supplements you currently have your cat on? Besides the sub-q fluids. I am giving my cat fluids, but looking for more options to help him with this condition.I am sorry about your kitty. However--- when my 16+ year old cat was diagnosed with CRF in June, her Creatinine was 9.8 and BUN was 208. We did daily sub-fluids, medications and supplements.
One month later her Creatinine was 3.1 and BUN was 58. So I would not count your cat out just yet, it is not impossible for him to improve!
I'm not sure what Sneakers current levels are but it is around 5+ months later and she is doing pretty well, although she is still quite thin... She is still on fluids and medications but the fluids are now every other day.