We once had a cat who broke his back falling from a rafter in a barn. He was paralyzed from about the mid-spine down, but we had a good, compassionate vet, who put him back together and did the best possible for him. The cat (called Bear) was still bright and cheerful and didn't seem to be in much pain, directly after he recovered. I hope it goes better for you than it did for poor Bear. He did well at first, but he had to wear a brace, which he hated and made him hot. He also kept injuring himself, so eventually we had to keep him confined. He had a big baby crib in the kitchen, where we almost always were so we could pet him and look after him, but he wasn't happy. Also, due to being completely incontinent, he was always smelly and had to be bathed several times a day two things cats hate. Then complications with his health. Eventually, when it became clear that he was sick, misreable, and depressed, we had to have him put to sleep. Cats, the vet said, often don't heal well from broken bones. They're so finely put together that what a dog or a human will heal without much bother can be a lifetime handicap for a cat. But it's different for different cats. I admire your determination to take care of the poor wee soul, and I do hope that it works out.