Well... When you change, he may change. And I don't mean in a see the error of his ways and get sober way
When I decided to leave (and had a plan and a timeline) my attitude to him changed. I truly let everything go. Because I really didn't care anymore. And it infuriated him and he really cranked up his abusive side something wicked.
So eyes open, head held high, and stow away in the back of your mind that circumstances may propel you into action sooner than you anticipate.