You must be scared, exhausted absolutely overwhelmed right now, I'm sorry.
Sonya, anyone who's had a pet with kidney disease can tell you there are days when you wonder if the end is near - only to be surprised a week later with how well they recover. I don't want to offer false hope, but I and others I've commiserated with learned not to give up. There's many nuances to the condition and there's a balancing act to finding what works with
your pet.
Take notes (with dates) - on everything. Food, water, mood, energy.
Has the vet mentioned subcutaneous fluids? Vets differ on their importance. My cat seemed to feel better with them.
When this crisis passes, I encourage you to talk with other owners, vets, and find an online support group or forum. There's no much to learn. This is vital...its hearing other owners talk about how many times their pets were in dire shape, but then improved....that taught me not to make assumptions, or give up with this disease.
Never give up until there are no other options - there can be incredible turnarounds with this disease. I dearly hope you're experiencing one this week. Sending you hugs, lots of support and courage. Keep us informed.