If this man is "THE ONE", if you are meant to have a relationship with him, and if he's super-wonderful-committed-to-sobriety, then he won't have a problem with slowing right now and waiting to see how things develop. There is no *danger* in waiting, as much as some alcoholics make everything out to be URGENT all the time (not saying that this is the case with your fiancé).
littefish made a good point: he's only in his first year of recovery. It's time for him to focus exclusively on that and nothing else.