I totally understand your feeling, and you are not alone...actually my son's case is even worse, his autism level is mid not mild, also with IQ problem, + ADHD, doctor said he might has high chance to take medicine when he is 6. And, he has high level of heavy metal found in his body, he did the chelation for 1 year, but the lead still cannot be removed...Dear apple, hold on...you see your son's improvements, you see his trying, u need to be patient and not to get disappointed. There is no miracle cured for autism. My boy's development is 2 years lagging behing the same age. U know what i am sadden when i look at other 5 years-old boys and compare to my boy acting like baby 3 years old. But i believe in my boy...Apple, just hold on to what u already saw, he is improving every year!!