K First of all, there are non-stimulants. A diagnosis is seperate from "gets amphetamines/speed". Ask him to let you try atomoxetine if he doesnt believe you

Also, Has to be a psychiatrist usually too eh, dont get pawned off on a psychologist before you investigate if thats a guranteed route to a legally and medically valid D^x^, they might be able to help you perform better but often they cant diagnose you with the good kind of diagnosis that gets meds and accoms. Its like an "I'm in love with the boy"/"The Best things in Life are Free"/ Temu "diagnosis" otherwise even tho it could give you valuable coping skills/life skills a psychiatrist can't focus on