
It does seem, as you are indicating, that if things are done now when he is so young, they can have an outward positive effect maybe more than for older
stroke victims. I think in your shoes, I would reach out (or have your mom do so) to the doctor who treated your brother for stroke, and ask him about rehabilitation specialists who work with kids that have had strokes. See if you can get a referral, and go to the appointments, and learn what they are doing.