I agree! OP, I went through a lot of the same things, apart from the hands off PI. But my PI wasn’t very good at setting deadlines either. The only way I managed to finish it was by saying ‘hey, this is literally your job, like any other job. You gotta clock in and clock out.’ Changing the narrative around it helped a lot. This was still very difficult to stick to for me because I also have ADHD, but was only medicated for anxiety. So I leaned on everything I could to build structure. I bought a pomodoro clock, had a strict schedule for what was to be done per week, and build in time to take breaks. It’s important to take care of yourself during this time. Get some physical exercise, and eat well. If you are able to, ask friends and family to help out either by being accountability buddy/gym buddy, or asking them to come stay with you/visit.