Milkshake Needs Help

This cat lived on my block and one night I saw something dangling on his neck. When I tried to get a little closer he would run under cars but you could tell he was sick I checked on him and fed him for a week before I found this amazing team of women to help me. They were able to trap him but the vet bill keeps adding up, he has leukemia and the thing dangling from his neck was skin he has a huge wound under his neck. I just found out he reopened his wound and it’s bad. He really needs our help