> waiting too long for medication probably isn't a great idea either

I think this is critical. I have a 7 year old daughter who was diagnosed about a year ago. For context pre-meds she was getting frustrated at her inability to put together her own LEGO creations. She would work on 5+ at a time. She was frustrated and was just being able to express her own frustration. Post-meds (dexmethylphenidate) she can actually build with LEGO (her greatest love I think).

The key idea however for us is that the meds give her time to learn. Not school learning stuff, but to learn about actions and consequences. About how her executive functioning can be improved and how her brain works.