Natasha, let's hope he stays stopped. That's the hard part. And that's why AA is recommended. He would be with other people going through the same struggle, and through the Steps he would learn so much about himself and why he drank the way he did. One day at a time he will leave all the negatives behind and step into the future as a new person, full of hope and positive expectations.
Most people who stop on their own without follow-up in AA are the same miserable people who have simply put the plug in the jug and changed nothing else. They inevitably relapse or are so unhappy with themselves that they make everyone else miserable. I saw this happen with my 2nd husband. He did stop drinking and went to meetings for about 2 yrs., but he would only go so far with the Steps, quickly reverting to a negative attitude and verbally being very nasty to me. When I left in the 3rd year, he resumed drinking and is still drinking to this day. I think he's going to crash very, very soon.
But your husband not drinking for 2 weeks is a glimmer of hope. The alcohol should be out of his system by now. However, he will need something to replace it. He should also be eating ice cream or other relatively nutritious food with a high sugar content. There's a lot of sugar in alcohol (especially beer), so they need to replace the sugar when they stop drinking to stave off relapse.
Emma, since your husband has been sober more than 6 mos., he probably doesn't need the thiamine anymore.
Hugs,
Connie