If it's any encouragment: my husband continued to drink heavily the first year of my sobriety. I switched over to being the designated sober driver. He liked that. I have taken him home from several parties with him being totally smashed.
A really surprising development lately is that he has cut down enormously on his intake. He was drinking box wine and his weekend drinking amounted to around 4 to 6 bottles when I quit and now he is down to 1 and 1/2 bottles of wine for the whole weekend.
I never pressured him and it's just happened. If a hard drinking Swedish Viking weekend warriar can cut down like that, maybe anyone can!