Welcome, I'm glad that you found us.
What is the nature of the other medications? Are they for regulating CP symptoms or other physical conditions?
Doctors frequently don't agree and it is hard for parents to determine which course of action to take. We always urge parents to get as thorough of an evaluation as they can if their child seems to need medications to control behaviors because sometimes there are other issues at work that need different interventions. What kind of doctors diagnosed the ADHD?
The other thing we recommend for parents is to get a copy of Ross Greene's book "The Explosive Child". There's a thread about it at the top of this board which should help you adapt it to younger children.