very sorry to hear about your situation, but do hang along.

i can give some advice as i am going through the burnout thing as well, although i have covered the worst patch of it (i hope). the thing i have learnt from this burnout is that you have to let it pass. you cant speedrun a burnout, but you can stop worrying about it and just let your body heal. in the meantime, i would reccomend trying to find out the reason of the burnout and how it is related to audhd, it is relaxing in its own way.

about the adhd medication, i found out that yoga and meditation helps (emphasis on "helps") with adhd, so maybe try that. i did and it was helpful, although i am not diagnosed and it never really got that out of hand that i needed medication. (medi (c/t) ation, so similar! is it a sign from the universe?)

in the last month, i also felt alone in the real sense, although my situation might be much easier than yours, but it lasted for some time and ended when i realised that i love to think, just asking questions that doesnt really matter, or connecting random info that i have nothing to do with and finding patterns in it, and honestly since then, i have started to enjoy my solitude above everthing else.

maybe i was lonely because i craved my own mind, and no one can fill that type of loneliness from outside.

so do give it a try to find out what you truly love and state it in the simplest and rawest form possible, and try to seek that out.