I did an intervention with my AH and it was such a big mistake. We went into it thinking this is what would make him stop. A month in rehab was the ticket. But all it did was humiliate him in front of his family and permanently damaged the trust he had in me. He stopped drinking for 4 months. Then he started and it was the worst relapse ever.
I was so desperate to save him. He built a successful career and I didn't want him to loose it all. I really wanted to save HIM more than me. I felt I sacrificed myself to help him. In the end he resented me for ruining the image of the successful son, brother, father.
What I wished I had realized is interventions don't work because it only works if the person really wants to be sober. If December is a bad period for him, this is another reason not to do it.
What I did try is to hire a counselor, but just let it be you and the counselor with your husband. Don't involve family. There is a humiliation that goes with that that can really back fire.