I cant get myself to do my online classes. : ADHD

Now that I have online classes, my ability to do work and even think is slowly crumbling. I’m going insane rn because no matter how hard I push myself I cant bring myself to do simple and easy homework. In fact it’s at the point where I cant even bring myself to do some of it at all. I need help desperately and my grades are tanking. I have so much to do and so much time that I keep on wasting. These online classes are killing my mental health and I cant focus even when I’m in my meds. Please help, I’m on my last strings as it was a struggle to even get myself to post this on here. Please help my mental health is degrading more and more.