Please help me, I really need advice on this...!!!!?

He doesn't have much time and you know that yes he is sad and wants to make things better but hes addiction doesn't let him,..if it was up to him he would totally change that i bet..watch the movie "the wrestler" I know its like about wrestling but a major part of the movie is way similar to your story he has heart problems and he finally reaches out to his daughter which he hasn't seen for many years..hope this works for you but remember the addiction and the drugs made your father like this in his heart he would change all his life to watch you grow next to him