Dr. Dodson offers a guide on how to tell if ADHD medication is working here:
A couple more articles you may find helpful on this as well:
It sounds like this doctor isn’t an ADHD specialist, or not a knowledgeable one at least. It may be time to find a different clinician for ADHD treatment.
ADDitude Community Moderator, Parenting ADHD Coach, Podcaster & Author, Mom to teen w/ ADHD, LDs, and autism