Did the attorney say anything about your responsibility to get professional counseling with a specialist in families of addiction now? Because I think if I were a family court judge, I would want to look at how the sober spouse had been directly addressing the issue of alcoholism in the family.
I don't know much about the law, COD, but out here where I live on the west coast, when cases like this end up in court, the sober spouse is often ordered by the judge into codependency counseling--sometimes for a full year-- and to mandatory attendance at Al-Anon as a requirement for custody. I have been in meetings with people who were mandated to attend them.
Maybe it would be a good idea to get a jump on those actions now?
There are members with legal expertise on the forum, and of course, plenty of people who have dealt with custody issues. You are in the right place!