There's a lot of ways to help besides getting someone set up with medication or a therapist. One thing I can advise is that it's important to (continue to) have

There's a lot of ways to help besides getting someone set up with medication or a therapist. One thing I can advise is that it's important to (continue to) have patience. Patience is a really powerful thing. I know this suggestion sounds hilarious but look into the book Cognitive Behavioural Therapy Workbook for Dummies. I've seen it recommended on mental health forums, for anyone, including with no clinical diagnoses. From what I understand, CBT is not a process that is just for people with a specific set of disorders, but for everyone, and the usual setting of the therapist's office isn't the sole way to go about exploring it. I don't have many more specific actionable ideas but I would look at forums (Reddit or maybe somewhere else) for people with similar positions who have been given advice. Just know that if you and him can't do one-on-one therapist visits or medication there is not nothing you can do. Being there to listen to him and communicating with him every day is better infinitely better than nothing.