I'd been having this feelings as of late, and I met criteria to go to an Inpatient Treatment Center for roughly 8-9 days. Even though it's isolating, its been good for me. I met a lot of good people and it was very therapeutic interacting with most of em'. After I came off of high precautions, I got switched to Residential Care (which is a bit more laid back), and I'm on Day Treatment now, so I'm able to post about this.
If anything, the worst thing you can do is let this stuff sit. I'd highly recommend at least one of the above options. Don't get me wrong, I hated it then and I still do, but I've acknowledged that I needed it. It's something to try, at least. I don't know too much about your situation, so I can't judge personally, but if he's in a critical state, that'd be better than letting him do it and then spending months in UNI. This is all just from personal experience, but if you have any questions or concerns, I'd be happy to answer them in a PM, or whatever works. Thanks for posting.