Absolutely. There has to be some little glimmer of already wanting to quit for them to take the help seriously. I would absolutely recommend AlAnon as well. You can’t just force someone into treatment, and that’s pretty much what interventions try to do, on top of making the person feel guilt and shame which likely is why they drink in the first place. Being able to have a one on one, calm conversation about how the person is affecting themselves and others is probably a good route, because people often do not recognize they have a problem in the first place. It would not be surprising for it to end with the person getting angry and storming out, but it plants the seed in a more reasonable way than having everyone they know cornering them, humiliating them, and saying “go to rehab now or we never speak to you again.”

Source: in recovery, worked in the field.