How can we get a doctor to put my brother on hospice care?

Mom did it all for 10 years. Brother is 60 with HIGH IQ but not with too many other things for him to live alon. He's with me. I care for my husband - a full blown Narciccsist (divorce is not an option), raising my stepdaughter is the only joy in my life, and I killing her softly, and deal with her mother also narcissistic-32 going on 17. Maybe I could have handled it all 15 years ago, but I had to take an unwanted medical early retirement from teaching which i loved because my fibromyalgia pain, and the oncoming stress created such a fibro fog I could not function. It was time to leave before they told me to. "I" need a caregiver! Can't ever find any way to destress. More than 8 Rx, all the mindfulness, psysco,relaxation, yoga over the years is of no avail. Neroupsych testing places me at 18-20% of my peer norm.On SSDI but by contract from school district I say at a balanced level of 80% of last contract pay. SS goes up LTD goes down,etc. I don't want to die but I am worn to the bone and using every ounce of mental energy, just need sleep. Even CPAP does not help provide enough restoitive sleep if I can't get to bed. Can I get my doctor's to qiaulify either my brother or myself to qualify for a little know clause in Medicare provision which would pay out side assistance to come in and do what I can't? I am beyond help and hope. Ginny