Peter G

I wouldn't wait until I saw what he does before taking an action that could very well be a positive message and a proactive action for him to see. In some ways, getting rid of your own booze shows support for his decision to swear off booze and could further reinforce his decision. If he catches your message behind this action or not, makes no difference. You putting it out there in the world is enough. Aside from the inner quirks of your relationship, why in the world would you need to see what he does first?

The more important question for you is this: why do you feel it's necessary to turn something you can do now, something that has every potential of being positive and proactive, into a reactive future consideration - based on some possible future behavior that you have no control over? If you can do something that has even the slightest possibility of helping and it won't cost you a thing, do it. Full stop.