Asklemmy

I do something similar. But I also have a huge master list organized by category (for chores it's rooms based) and frequency (daily, monthly, etc) with a check box next to each thing.

I have it posted up on a wall where I can't help but see it, and next to it is a whiteboard calendar where I schedule all of these tasks. You could always try something like this (I know it's borderline insane but ADHD gonna ADHD) or make it your own.

The key though is to make it iterative. Pay attention to what works (for example with chores, is sweeping daily too often? Then change it. Same goes for studying) and modify it on set intervals (every 2 weeks, month, whatever).

It gives a visual representation of what needs to be done, when, and provides accountability because you can see what you did/didn't do, and so can anyone else who has access to it.

It took me probably 6 hours to initially set it up, but it's been huge for me.

Alternatively (or as part of some organizational strategy), focus your effort on tasks you do like and subjects you do like, while doing enough to just get by on everything else. Breaks are important, but try not to interrupt any states of flow you get into.

Bonus: Post Secondary School is hard! Be gentle with yourself. And remember it is rarely a life or death situation. Follow your syllabus, it's there to guide you, and talk to your instructor and classmates when you can. There will never (unless you have insane physics professors like did) be new material on a test. It's always something you have covered. It may not be a specific question/problem/topic you have solved/written about, but it will use all the same skills and knowledge you've developed. Plus, a lot of questions come from fairly standard question banks with digital learning software becoming nearly ubiquitous.