I have had 4 CKD cats, all young (sadly) in the last 6 or so years, including my current 4 and 5 year olds. Internist thinks God sends them to me (if so, can you please lay off, God?). I think it’s because I live in an industrial wasteland and my cats (and rescues) are all street kitties.
I highly recommend Tanya CKD (aka felinecrf.org) - the list-serve, website and lastly the book.
FAIR WARNING: There is a lot of moderation (more-so since I left) and some unnecessary drama/politics, but there are a lot of really excellent, lovely people who can give you great advice. Some of them I consider life long friends - whether I have met in person with them or not. They really got me through the hell that was my first CKD experience (heart cat died a year to the day from diagnosis… but from comorbidities, not from CKD - she had a LOT going on). Join now when you aren’t in crisis - there is a waiting period while the mods approve that is excruciating if you are in crisis, as I was when I first found it. Regardless of caveats, it’s a great resource.
I have been off the board for years now (subscribe but don’t participate), but there are a lot of non-Rx foods that are lower Phosphorus that either Helen’s lists (see below) or users can steer you towards.
Mine currently eat Rx just fine (even though younger cat is tiny and not a great eater and it makes me nervous, my vets aren’t concerned yet), but I used Helen’s lists a LOT in the past. She updated them periodically:
https://felinecrf.org/catfood_data_overview.htm
https://felinecrf.org/canned_food_usa.htm
Feel free to PM!
Also, my cats are going on 2 years now post Dx and are amazing. Previous cat was adopted out and also doing great! So 3 out of 4 after several years! CKD sucks, but it’s more manageable than people imagine.
Jingles…