So he's been sober for 18 months. That's commendable. Is he working a recovery program like AA?
Sounds like you're both under a lot of pressure with the move and everything going on. Have you attended any Alanon meetings? If you recently moved that might be a good way to build up a support system for yourself.
Also- try posting on the Friends and Family of Alcoholics forum. That's where I usually post. There is a wealth of info and experience there, and many people who have been in your shoes. Best wishes and welcome.