My daughter is 17 and has ADD.
I am not a lover of Adderall - but you do not have to wean off it - but maybe there are withdrawals - thats a new one for me - so she is hyper (ADHD)?
I am totally surprised she wasn't eating - I'd call the doc right away
Maybe someone else here can help you - you are lucky she wants to take meds
If she was truly tested and eval - not a ped - ADHD does not go away but maturity helps.