D.P.
There's no such thing as a "recovered" alcoholic. He's either in recovery or not. He's not. He's relapsing, which is not uncommon. There are alcoholics who pick up again after 20 years of sobriety.
He needs AA, a sponsor and a recovery program. Bottom line.
You need Alanon to learn how to live with an alcoholic.
This has nothing to do with you "trying harder" or "loving him enough" to put down the alcohol. It's about a disease. He is sick and he needs help. You need to stop living in denial.
As for the upcoming home, etc. everything will work for you IF this issue is addressed. If it's not, it's only a matter of time. Alcoholism is a chronic, progressive fatal disease, left untreated.
Best of luck!
ETA Anyone who claims to be able to "stop drinking" on their own is a liar. Alcoholics need to ADMIT and SUBMIT to a group where they can get support and accountability.