I’m sorry to hear about your stress. In case it’s helpful - I’m reading a book called The Alcohol Experiment by Annie Grace at the moment. You can actually just go to www.thealcoholexperiment.com
and get free access to the whole book online. It’s a science backed good read - a friend recommended it to me. I’m interested in the reasoning behind why and how much we drink. I’m almost finished reading it and I am finding it thought provoking. Perhaps if you drink - you could read it, and approach it from your own wellbeing and hope it interests him, or he gets curious - or you could recommend it to him after as a good read, and it could help introduce the conversation. It doesn’t take long to get through. Good luck.