Hello Ruth and Fatso. Welcome to FDMB. I have an 11 year old diabetic boy, and a 14 year old girl who was recently diagnosed with stage 2 CKD. I also have 3 other cats ages 6, 12, & 13. Because they find eating to be quite social and they play musical bowls while they eat, I needed to find a food that is low in both carbs and phosphorus. I completely understand that your first concern, at this time, is Fatso's high BG. But keeping him on low phosphorus food will help to prevent his kidney disease from progressing (which I know you know). At this point, I think keeping all of my feline critters on lower pho food is to their benefit, as none of them are young. I'm transitioning to EZ Complete raw (and I appreciate
@Idjit's mom for telling me about this stuff). I have yet to be successful because I didn't have a grinder, and my diabetic was totally turned off by the texture (with my vitamix). However, my CKD kitty LOVED it! I now have the grinder (a cheap one from amazon), and plan on using it tomorrow for the first time. My intention is to get all of them eating EZ Complete, as I have been losing my mind trying to find appropriate food that I can afford and that all of them will actually eat. This has been quite challenging. I have found one food that all of them love more than any other canned food that they've ever had, and it's low in both carbs and phosphorus. It's called Whole Earth Farms Duck Pate. It's a bit costly for me, but not as expensive as some others that I can't even afford to try. (Money is an issue for me.

) The problem with the duck pate is that it is very difficult to get. Most places are out of stock, and I continually checked chewy.com until I found that they had it. But it went quick! I just ordered some from another online store the other day, at Healtypets.com. They were also out of stock, but they allowed me to put it on back order. I called the company and was told that they should receive a shipment soon. (I'm hoping!)
@JanetNJ also suggested some great foods. In addition to the FB group that Janet mentioned, there is also another wonderful support group--for CKD--that I've learned a lot from: Feline Chronic Kidney Disease.
I'm so sorry to hear of the problems that you're having with Fatso's BG levels. It has to be so frustrating to see his diabetes return with a vengeance, and to also be dealing with another dx of CKD. However, it is good news that his CKD has gone from stage 4 to stage 2. That's wonderful! Celie's has gone from stage 2 to having normal urea nitrogen (BUN) and creatinine levels. I'm not sure why, except to say that I'm giving her only low pho food now. She is unable to take phosphorus binder because it instantly made her sick. I need to get her onto B3 (niacinimide). When and if the time comes when you're making a decision to get Fatso on something to lower his phosphorus, here is an article that was provided by Laurie and Caroline at Food Fur Life:
http://www.rawfeedingforibdcats.org/feline-ckd-niacinamide-in-phosphorus-control.html
We're all hoping that Fatso gets his BG levels down soon!
Edited to add: I just received an email from Healthy pets to inform me that Whole Earth Farms Duck Pate has been discontinued.