Please help me. I don't know what to do. Are there any services for helping people like me? SSI takes too long, so I'm not legally considered disabled, even though I very much am. Is there a service where someone helps you keep up with your home?

I just can't handle the sheer amount of things I have to do to stay alive. I currently live at home with my parents and two out of three of my AuDHD siblings (third lives with other relatives which is not an option for me. Let's not get into that please). I can't handle all the upkeep my body and living space need. I don't know how to be organized. I have tried so many times to tidy up my room only to undo all my hours of work in a day or three. I can't handle having to keep up with nutrition. It's a neverending battle that I simply don't have the energy for. I can't keep up with my health needs like exercising or remembering all of my doctor's directions. My siblings and mother have the same problems as me. My father is overwhelmed by the sheer amount of shit he has to deal with on a daily basis. He can't be my daily caregiver, but I assuredly need help practically every day. I don't have the energy to do hardly anything anymore. What options are there where I don't end up in a group home? I have intelligence to spare, but most everything else is severely impaired in regards to ability to function day-to-day. I am physically able, but my executive function is nonexistent. I cannot function anymore. I am in crisis. Please help. Please suggest anything but a group home if possible. It has taken me literal decades to learn how to get along with my blood relatives. I don't think I could handle living with a bunch of strangers like that.

Edit: I'm in Tennessee if it matters.

Edit 2: please forgive any delay in response. I need to rest for a doctor's appointment later today. I will respond as soon as possible.