I had to put my cat to sleep Aug. He was 15. Diabetes that we couldn't get under control which created other problems.
I knew it was time bc he looked miserable. His **** gland had ruptured and so he was wearing that cone. He was losing weight rapidly and was so thirsty. He just was in misery. After about 3 months of trying to get his blood sugar levels under control, and still not able to, i decided it was time.
I think it's time for your kitty.

I'm so sorry
I have 2 other cats. Maybe when it's time, you can go get a baby kitten. It's so hard and I'm sorry.