Hi Jeri, I’m really sorry for your loss and your struggle right now. I just lost my girl to what I think was renal failure, August 19. My girl had kidney disease as well as pancreatitis and diabetes so it was impossible to treat all effectively since they were “competing illnesses”...I’d asked the vet a year ago if she needed special kidney food and was told no, but in order to treat her diabetes I went to low grain food but today I found out high protein probably wasn’t good for her kidney disease. Lose lose situation! I had no idea! So I really feel your anxiety, I’m so sorry, dear.
You might maybe try googling for non prescription cat foods for kidney disease...I don’t know which websites would be more reliable but maybe with some research you could find a good choice? It’s the only idea I have. I wish I had thought of that, for my girl. She just seemed like she was doing pretty good, until she wasn’t.
Hopefully someone else may have other ideas. My heart aches for you, please know you have support.