I know what you mean Michelle.
We went to a pre-conception workshop at a hospital and I tried to raise the issue of the guys going off alcohol pre-con. While they did concur, they were a bit wishy-washy about it, saying that it was more important for the woman to be off alcohol. At the time, it seemed to sink in for him, but I obviously didn't hammer the point home well enough, because a few months later he seems to have forgotten that discussion.
I think I now understand how women become nagging wives! I normally wouldn't dream of telling him what to do, so this is really hard for me to push for.