This might be reassuring about letting go of the meds
3-year follow-up of the NIMH MTA study. [J Am Acad Child Adolesc Psychiatry. 2007] - PubMed Result
"RESULTS: At 3 years, 485 of the original 579 subjects (83.8%) participated in the follow-up, now at ages 10 to 13 years, (mean 11.9 years). In contrast to the significant advantage of MedMgt+Comb over Beh+CC for ADHD symptoms at 14 and 24 months, treatment groups did not differ significantly on any measure at 36 months."
Controversial, I know, but this might mean kids/familes who learned skills did just as well with or without meds in the "long" term. I think it's also been shown that for adults, without the skills, medication doesn't change the outcome.