Please remember that no one is legally obliged to care for family or friends. An adult needing care comes under the remit of Social Services. My OH has 3 chronic conditions and all the charities, hospital departments, doctor etc etc would say they could only deal with one, and instead of dealing with that one thing, told me to ring elsewhere. Two years later I was so tired I was making mistakes with his meds as well as him being angry and uncooperative as he wanted a wife not a nurse/nag. He went into hospital as a danger to himself - and me.
Turns out one consultant had written to GP a year ago for district nurse to step in as diabetes should be self managed and carers should not step in, diabetic clinic had not told me, and letter got "lost" for many months. (I suspect clinic was too embarrassed to send it.). Supported discharge from hospital eventually arranged and after a week the response to problems and queries has been supersonic rather than stone deaf. Lots of referrals coming back to us.
It may be a desperate measure, but either ring Social Services (Crisis Team) or take him to A and E and say you are relinquishing medical responsibility for the time being as your health is suffering. You care but you cannot cope or carry on under present conditions. Just be firm and quote legislation. Person A (authorities) cannot force Person B (you) to take care of Person C (OH). I have been surprised how much support there is, too many barriers to accessing support exist. As an aside, his first day home I was really sick, and so glad support was coming and going as I was too ill to function!