A simple weekly review is one regular sitting where you look at your tasks, your calendar, your goals and how the week actually went, and then update your plans for the next one. Mine is one hour every Friday. I clear my inbox, update my plans, and get honest about what's working and what's not.
A not-to-do list names the habits that drain your energy and add nothing. How to make one in five minutes, what goes on it, and how to keep it working.
When energy is limited, every yes costs something. Say no to good-sounding extras, say 'not now' instead of a flat no, and set a few boundaries once so you don't decide them daily.
If you keep abandoning productivity systems, the system probably doesn't fit you. With ADHD, change your space and cut friction instead of switching apps.