According to Osho, you can’t make your husband quit; the urge to change him is ego and breeds resistance. Drop the crusade, stop nagging, and transform yourself instead. Accept him lovingly—especially if he harms no one—and the humiliation-pressure that fuels drinking will dissolve. In a relaxed, noninterfering atmosphere, change becomes possible on its own; otherwise your ‘help’ only pushes him deeper into the habit.
Stop trying to fix him; be calm and kind, and he may change when he’s ready.