Sounds very tough Gail. A lot of things can cause delusions, not just schizophrenia. Borderline Personality Disorder is one that comes to mind. Maybe he might be open to talking to someone first without the thread of hospitalisation hanging over his head? I have a history of delusions and pyschotic episodes, hallucinations, internal and external voices etc - and the right medication has helped enormously.
Are you seeing someone like a shrink or a counsellor? I hope you have someone to talk to.
It's hard to get through this stuff without drinking, but showing up sober is really the only way.
I have compulsive, obsessive suicidal thoughts so I sympathise with where your head is. Life is very hard sometimes. No doubt about it.