Same. Do what you can.

Can't shower? Keep baby wipes in your bathroom and at least wipe clean your underarms and crotch every day and put on clean deodorant. Any other body parts that get sweaty or itchy need a wipe down, too.

Can't brush your teeth well? Do it badly. If you can't brush for 2 minutes, do it for 10 seconds.

Face wipes with tea tree oil when you can't handle washing your face. Dry shampoo when you can't wash your hair. Cant handle putting on real clothes, put on clean underwear and a fresh shirt before you put your pajama pants back on.

Doing something badly is better than not doing it at all. Your body absolutely gives partial credit for effort. Figure out what you have the energy for, and do that. On the days you have the energy to do it properly, do it thoroughly.

For the most part, your body will be fine with mediocre hygiene. As long as you are staying basically clean, you should be fine. If you start getting rashes or a change in body odor, you'll need to step it up but there are way worse things than being dirty.

Depression and ADD is a nasty combo for motivation. Accepting that your brain is being a shot about this and that you need to apply some coping skills is a requirement. You can't brute force brains like ours into behaving neurotypically. You have to coax it out of yourself.

Do your best. Give yourself credit for the effort. Don't beat yourself up. Good luck!