I need help managing my ADHD?

So I was put in algebra 1 at the begging of the year, and fail first quarter so I got put into algebra 1A. I did so well in that class, that my teacher recommend a summer class where I would take 1 during an 18 hour course during the summer, thing is, I have ADHD and I can't do jack squat with my pills ( that's why I failed outta 1) and since you need to take them regularly, I can't take them for the summer camp because its only 2 hours a week. Is their anyway I can take a pill that let's me do that or what? P.S I'm taking 50 ml. Vivance , or however you spell it. Also, I'm 14