My father is so drink

This is a very sad situation but the fact of the matter is until the person themself decides to quit they won't. There is nothing you can do but pray for them and offer help if they ask. I have a sister with a drinking problem but although she has tried to quit before she always goes back to it saying it's just not fun without "partying". What is really bad is our father was the same as yours and he is no longer with us - he never quit drinking no matter what the doctors said.