Read this https://m.barnesandnoble.com/w/you-mean-im-not-lazy-stupid-or-crazy-kate-kelly/1103365514
https://www.goodreads.com/book/show/108592.Delivered_from_Distraction
https://www.goodreads.com/book/show/2715865-the-disorganized-mind
Get and read the first book. You will see yourself very quickly. Biofeedback works with many even better then meds so at least something to try. Many people have a hard time getting regulated to meds. Car accidents and add go hand in hand. Very common so be extra careful.
You have gotten great advice. But you shouldn’t restart school till you have several months that the meds are working well for you. They might need to combo meds. Then restart school. Why not try to succeed when your at your best. Otherwise you won’t break the cycle of failure. You can do this!