Abusing uppers to manage adhd?

Anyone else who abuses uppers to manage adhd? I use speed almost every day to manage my undiagnosed adhd symptoms and get stuff done. It doesn't make me hyperactive, it calms me down and organises my thoughts. I can clean my house and take care of my business and I don't suffer from negative adhd symptoms. The downsides are that I get no quality sleep and that my appetite is gone (TW: I lost 3kg in 2 weeks).

Wondering what I should do. I used to be a raging alcoholic but cut back on drinking since starting speed. Now I drink once a week.

I have been warned of damage from using amphetamines long term so I don't wanna make it sound like a miracle cure.

Also my doctor doesn't wanna diagnose me with adhd because I already have an autism and schizoaffective disorder diagnosis.