I can’t offer any first hand advice as I am not dealing with addiction myself. However I grew up in a family with alcoholism not only in my immediate family but extended as well. The immediate family member attended aa and it helped them. However everyone is different. I did find this article online: https://www.theatlantic.com/magazine/archive/2015/04/the-irrationality-of-alcoholics-anonymous/386255/ which talks about aa and other treatment methods:

“A meticulous analysis of treatments, published more than a decade ago in The Handbook of Alcoholism Treatment Approachesbut still considered one of the most comprehensive comparisons, ranks AA 38th out of 48 methods. At the top of the list are brief interventions by a medical professional; motivational enhancement, a form of counseling that aims to help people see the need to change; and acamprosate, a drug that eases cravings. (An oft-cited 1996 study found 12-step facilitation—a form of individual therapy that aims to get the patient to attend AA meetings—as effective as cognitive behavioral therapy and motivational interviewing. But that study, called Project Match, was widely criticized for scientific failings, including the lack of a control group.)”