My son is 11 years old, he has been under the care of developmental pediatricians and psychologists since he was 3. He has been diagnosed with cog. delay, speech delays, sensory disfunction,Obsessive Compulsive Disorder (OCD), ODD,& Pervasive Developmental Disorder (PDD). He has behavior issues and impulsivity issues. He is due to start Middle school next fall. His BD teacher harped on me over the fact that my son wears sweat pants more than jeans because he says my son doesn't fit in with his peers. He can not button jeans by himself. The sweat pants allow him more freedom and independance as well as to him are more comfortable because of his sensory issues. He also still loves Thomas the Tank Engine, he has multiple books which he still likes to look at. I was told I need to force him to grow up. I should throw out all of his Thomas books and toys which he has been collecting since he was little. He still plays with the toys. He also loves batman and superman, anything Disney, and construction stuff. I need some feedback, since he's starting middle school, should I force him to let go of his past?