physically being unable to get myself to do homework

(F 20) I’m finishing up my high school diploma this year due to unfortunate circumstances (a whole woozy of mental issues) and there’s only two and a half weeks left of school. i only need two more credits (TDSB requires 30 for a diploma) and I’m taking those two classes right now but it seriously feels IMPOSSIBLE to get myself to do work.

i’ve tried every trick you could think of, even giving my devices and any distractions to people and telling them not to give it back to me until I’ve finished my work, but my mind just goes completely blank these days unless it’s in-class worksheets based off something we are doing presently.

it’s gotten to final assignments season and i literally have a film due tomorrow and i still haven’t filmed it and i want to film it so bad that I’m literally crying over being unable to get myself to do any type of homework. For the record i was seeing a psychiatrist for a couple of months but i left to get a nee one because quite frankly she was bad at her job and wasn’t taking me serious (pretty sure she wanted to pinpoint my issues on my smoking and drinking, but i know for a fact it’s deeper and more neurologically related)

does anyone have any type of advice left for what i could possibly do in this situation? i already talked to the guidance counsellors but again they don’t take you serious unless you’re actively harming yourself and/or others, and they pretty much told me i need to thug it out which i would if i could.