I'm 19 years old, and I've been prescribed Ritalin and Concerta for 3+ years. I used it as suggested for 2 years but then started abusing it. I don't snort it or use it for fun I "abuse" it to study and function the dose doesn't feel enough. I get that I overuse it because Ritalin has this awful thing that makes you want to keep popping those pills even if you have already taken them just half an hour ago. Currently used all of my 2 month supply in like 2 weeks and I feel like absolute shit. I want advice on how to return to my regular use.