CBD helped me for a while, tons of digital timers, to-do lists, and calendar appointments, but what really changed things for me was meds. What is your reason for wanting to avoid meds?
I am on the lowest possible dose of the only non-stimulant ADHD medication (Stratera a.k.a. Atomoxetine). All it did was tame the brain squirrels but I am still me.
Try out things that have stimulant effects: caffeine, exercise, horror movies. Your brain is wired for crisis and you can handle things well when in crisis…the problem is it you chase that, you have a high risk of burnout if you don’t plan down time.