Yes and no. It's complicated.
At the worst of it he lost his job, not over the alcohol, but over a labor dispute. He then went to work part time with my uncle who had a meat cutting business on the side. My uncle simply didn't allow my dad time to go get a drink, and he quit. This is after years of treatments, prayers and everything else that I'm sure you're familiar with.
Later my dad had gastric bypass surgery. This was back in the days when it was experimental enough that he got the whole procedure, including the month and a half in the hospital paid for by the facility. One of the complications from his surgery was kidney stones.
Three or four years later, his doctor, not knowing the history said he should drink a beer a day for the kidney stones. So he started drinking again, but it never got to the point it had been before.
There were further complications from the surgery, not alcohol related, and he passed away not long after that.