Just wondering if anyone is experience what I am with my 9 year old son. He is diagnosed with PDD NOS and has been on Metadate CD for 1 1/2 years (20mg) He has a LOT of anxiety and seems to be regressing (especially with toiling). He doesn't eat during the day and is quite thin. Sleeping is not a problem. I hesistate to increase his dosage as I don't want him to get thinner or have difficulties sleeping. Any suggestions?