You’re doing a lot. Don’t let yourself tell you otherwise. My wife had lifelong GAD and panic disorder that was almost completely untreated for most of her life. Getting help wasn’t easy but, it has literally been life-changing. Getting him help IS also helping you as it is very stressful to be the partner of someone with untreated mental illness.

Make sure to give yourself care too. You can’t help if you’re driven to breakdown yourself. It’s hard and there are ups and downs but it will get better for both of you.