First of all I’ve been there with a loved one. I hope that you listen because if not you’re in for more years of hell.
1. The best person to guide you is someone who has been there himself. I’ve been watching this guy on YouTube and he’s the most authentic I’ve found:
2. This is going to sound off but if you listen you will prevail: look up “deliverance from demons of alcohol” – yes, it means just what it says, and who is behind alcohol and drug addiction. There are a number of people online who do deliverance but if you or your brother is saved he can do a self-deliverance.