If you want a person to be less thirsty for wine, you have to make him afraid of being thirsty for wine.
People are always afraid of death. If you make them feel thirsty for wine, they will die soon, and they will become afraid.
But it’s not up to you to say it, it’s up to the doctor or his friends.
The best way is to go for a physical examination if he feels unwell. If he doesn’t go, find a few reasons. Don’t tell him to go because he is thirsty, drunk or in poor health. You can tell him about his age. The person next to me had a physical problem and didn't check in advance to find out what the problem was. If you make more real metaphors like this, he will be afraid and go to the doctor. You will have the opportunity to let him know that there is something wrong with his body due to thirst for wine. It would be better if you go to the doctor who will examine him in advance. Let him talk about the serious harm caused by thirsty drinking. Generally, if you tell the doctor about your father's condition and how he behaves after drinking thirsty, and your own desire for him to help you and bring peace to your family, the doctor will help.
The next thing is that he will be thirsty for wine. As children, buy some good wine for him to thirst for. At least good wine won't make you thirsty and drunk, and it won't do so much harm to your body. Buying wine from you can also help him gradually change his thirst. If you don't buy him, he will be less thirsty.
These are all experiences, and I have been there too. So I share it with you, I hope it will be useful to you.