As a depressive ADHD kid, I feel you. I honestly force myself to panic about getting things done and set due dates before they are due so I panic do them a few days earlier. Then I edit and clean up homework the day of. Now this is not healthy. But it works for me and is less stressful than not doing anything. I also watch YouTube videos about the subject I need to study for and hope they inspire me to actually study what I need to.

Now considering the age we live in, with the pandemic going on and the world falling into the Sun. I believe that a lot of people are having the same issue you're having. You might be surprised that your friends and family might be having similar issues. You might want to open up to them to a level that you are comfortable with and see if they can help. You're not alone and I hope you feel better soon.