He sounds like he needs inpatient care, something far beyond what you can render. Hospitalization is for stablizing the patient, getting them onto their meds and future scheduling with psychiatrist and psychologist or another counselor, also with an agreement for self care.

If inpatient treatment is not against his will, he can learn what he needs to do and begin regular medication adherence in 3-5 days, yes. Be assured that (unless insurance or incompetence with the doctors reign) if he isn't ready to leave the hospital, they will try to keep him until he complies with the necessary ingredients for good, safe self-care.

This is too much for you to have to bear alone. I hope the struggling smooths soon.

BTW, did he make a decision or put it off again? Perhaps the attention he receives from you keeps him in denial...and the depression at bay for a few hours or such? I hope you urge him to follow through with hospitalization, as he obviously isn't listening to you. TC