Isn't the AdderallXR a time release medication. It sounds like the medicine is not kicking in when you need it to work. I stuck with Ritalin 10mg tablets because within 20 minutes of taking the meds .....they started to work.....lasted for 3 to 3 1/2 hours. My son was and still is on the maximum strength taking 2 10mgs tablets three times a day. I think if you would switch him to a medicine that is not time released you might have a better response from the child. My son also is taking Depakote too which is also a anti seizure medication but it is also used for Bi Polar too.