clem55-there's nothing you can do. Your husband has to decide to do it for himself. I have a son that's diabetic, he doesn't watch what he eats, doesn't exercise, nothing. We've told him numerous times that diabetes isn't a disease to mess around with, but it obviously hasn't sunk in yet.
But, I would seriously consider changing doctors if this one doesn't even have your husband check his sugar, that's insane.