Sharing Our Innermost Thoughts

hi
umm sooo this is not about me but my father
my father is an amazing man, he takes care of us, and never deprives us of what we need. But there’s on thing that has been bothering me my mother and my younger brother for years and that’s his alcohol addiction.
He has never physically abused us, but it is harming his health. And he’s not realising it, he says that drinking is his solemn and continues doing it.
We have had ‘n’ number of family problems due to his drinking habit. My paternal grandparents keep blaming my mother for his habit and all she has done for the past 11 years is encourage him to stop.
sheesh typical indian family.
i have tried to help him with his habit a lot of times since i was 12 years old.
it did work sometimes, he stayed sober on the weekdays and drank during the weekends. But now in the lockdown he drinks in the noon and at night. (almost 4 quarters)
I need help, to know how i can make him realise what he’s doing is extremely wrong, bcz he’s very very very stubborn when it comes to his drinking habit.
i understand all drawbacks, the science and withdrawal symptoms which he might go through but please if something works let me know
please help me
id be very grateful if something works out even a little.
thank you so much