I have a 14 year old japanese chin canine. He is refusing food, losing weight, and is incontenent. I am doing everything I can to keep him comfortable. He does not appear to be in pain. I don't want him to suffer, and at the same time I don't want to euthanize him unless it is necessary. I want to give him the opportunity to go in his own time. Am I being ridiculous? The vet said at a certain point he won't experience starvation. I don't want to panic. What stages should I expect?