Hi, welcome
I was incorrectly diagnosed with ADHD when it was actually bipolar, such is the closeness of some symptoms. But like many mental health illnesses you have to adjust to the illness as the illness wont adjust to you. This means specific actions just for you to be implemented by yourself in a trial and error approach.
Eg. With depression when it arrives there's not much point trying to fight it, better to wait until it subsides then rebound with some positive thinking and motivation techniques.
With ADHD if you have mania thats obvious to friends and family then you might delay your study for a few hours and in the meantime do some serious exercise. Arrive home from that and have a shower to freshen up and you'll be in a better frame of mind to study. While in that good mood take advantage of it fully, no phone, no distractions, tell family you are committed to that study time. But there is a trap- study for too long and it will rob you of quality sleep time and seriously, lack of sleep is a quiet enemy of mental illness. Your extra study in the early hours will be counter productive. This means your evening and weekend time structure should be planned down to the minute but you'll benefit from it.
Please remember that those with ADHD like some other illnesses have a positive side and its often in extra creativity, adventure, art and so on. Mine is poetry and inventions. So in your spare time identify with this unique side to you and capitalise on it to explore your other potential. Google "famous people with ADHD"
I hope this helped. Do you have a hobby or special ability?
TonyWK
