Hey There!
Cool.
Herbs. There are soothers and there are some to improve mental functioning....
Switching refined sugar to a whole cane sugar is certainly an improvement.
But in the studies where schizophrenia (or even criminal/delinquent behavior) improved massively (if not disappeared) on diet, it was based on a diet makeover.
What they put in animal products these days is awful. The pesticide count, the bovine hormones, antibiotics and more are through the roof, never mind the stuff they are FED. If you cannot buy organic, hormone-free dairy or meat products, eliminate them totally (from what I have studied/seen). I myself started feeling immensely better from eliminating animal products.
Also, I would definitely eat organic whole foods. No excitotoxins (which cause symptoms not unlike your son's, as well as can incur MS, parkinsons or other similar physical diseases down the line).
Whole grains (you can still do whole grain vegan pancakes, etc. It's not boring or limited, etc, it's just a matter of translating your tastes to a healthy food choice).
Refined carbs are the devil.
I was ready to off myself and commit myself (again) when I got into this stuff. In 3 days on a water fast (I was in a really urgent situation), I was calm, peaceful, balanced, sane.... It's amazing.
Honestly, there's lots of good materials out there. And there are studies. This is not bulls**t. You are what you eat. Your cells and nerves and functioning is only as healthy as your diet... Most of us eat chemical stew all day, every day, from our pop to our cereal to our milk, etc. Is it any wonder people are soooo chemically imbalanced?
The body heals. Cells regenerate.
If you can, get testing. There is a GREAT place in IL that is leading the way with this called the Health Research Institute, of Pfeiffer Clinic. People come from all over the world. They are working with autism, asperger's, and "ADD" - by correcting deficiencies, etc. There are 92 minerals, we need at least 16 or 17 to live, most people hover around 25 or so in terms of what they are getting adequate amounts of..... I think they are at
http://www.hriptc.org/introducing_HRI.html