I have two beautiful grandchildren with Aspergers and Autism,and I believe that getting rid of artificial colorings and flavorings out of their diets has helped them,aspartame is also not good for them,it might help you to be checked for gluten intolerence as well.
My kids use meditation and deep breathing as treatment. They also use hemp paste- it's all natural and organic. Only has two ingredients and helps with their social anxiety and mood swings.