It is a tiny dose, XR. I don't think he noticed any difference.
When I asked him about his day, he said he had a bad day because I fed him carrots for dinner, sigh.

We've not gotten advised directly on parenting strategies from the PhD counselor (she suggested books, duh, been there), but we have employed various things for a few years with advice from teachers - cues about instructions, 5 minute warnings for transitions, and also figuring out what we are willing to permit to accommodate him (he likes to stand up while he eats) vs. getting "our way".
I'm hoping to find a parent program, maybe something with CHADD, that my husband and I can do together on a Saturday.