Relative to the ADHD, you receievd good advice - it does generally make sense to wait and see how development proceeds. I do disagree with the comment about the side effects of the medication. The medications can be used for long periods of time without long-term side effects. However, with very young children the preference is to wait and see what maturation brings over the next couple of years. The situation is made very much more complicated if there is an autism-spectrum condition. This has implications for special services in school, so it should be evaluated very carefully.