Hi Ontario. I don't think that forgiveness lessens anyone's self-worth! It is a bold move to forgive and a testament to a person's character IMO. You really need to do what feels right for you. If there is the slightest inkling in your mind that he would "take advantage" of your forgiveness, then give it more time. Three months is not much in the big scope of things. I think a good solid year is a more reasonable timeframe (if you must assign a timeframe) to gauge whether or not he is serious and worthy of your trust.
This made me project a little into my own future. I'm leaving next month and my AH is on his 9th day sober. He is proclaiming that this is really "it" for him, but has not used this to pressure me once into staying. I do not intend to stay b/c I have already made my plans and believe that time away from each other will be beneficial to us both. He will either continue to grow or fall and I will continue to grow no matter what. It's a win/win. If relationships are meant to be, I really believe there is a time and a place for them to come together whether "time off" is taken or not. There is no need for you to beat yourself up or feel like you must rush anything IMO.