I'm frequently asked by people if those with alcohol issues can learn how to drink moderately. There is an organization that's called Moderation Management.
The evidence suggests that those people who have severe alcohol use disorder cannot learn how to drink moderately, that those are people who really need to practice abstinence and maintain abstinence as long as they can and as much as they can. And if they do relapse, they should try to return to abstinence. However, those with mild alcohol use disorders and moderate alcohol use disorders, in fact, sometimes can learn how to drink moderately. Those who can learn how to drink moderately should do so with the help of a professional, with the help of either a support group or a professional in the field who can help them plan how to drink moderately, help them learn how to cut back on their drinking.
It often requires people to stop drinking for a period of time before resuming drinking in a moderate way. Again, the best thing to do is consult a professional.