None of this is easy and it can at times be quite heart breaking. Only you know what Cooper's quality of life is, as you know him best. I know sometimes that is more guessing then true knowledge. If he seems happy to see you, and he wags his tail, wouldn't mind playing a bit and hanging out with you, then those are things that you can use to try and figure out how he is doing quality wise. It still isn't easy though. I know it would be much better if the infections would stop and the insulin could be brought under control. You're right k9diabetes is a wonderful group and very supportive and knowledgeable.

hugs,
Sharlene and Molly Muffin