Absolutely 6-7 months of sobriety is better than none at all. It may be the beginning of a life-long recovery, and it may not. Only time will tell. Sadly, the odds are stacked against the majority of addicts. Hopefully, your husband will be one of the lucky ones. I pray that he will.
As Freedom already mentioned, it takes time and actions to rebuild trust once it's been broken. Allow your family time to heal plus the dignity to make healthy choices for themselves. Their choices are not meant to hurt you or your husband; they are intended to protect themselves.
My family held a lot of resentment towards my alcoholic boyfriend because of the hurt and anguish he'd caused me. I would feel the same if someone were causing my daughter pain. When I looked at the situation from this perspective, I was better able to understand their actions.