My almost 4 year old will start kindy/preschool next year and I am really concerned how he will cope. He is very shy. Will not speak or look at people when they talk to him ( besides a handful of people), won't participate in any classes or sessions we go to that we have been doing since he was six months old. He will hide, sit where they can't see him or cling to me. Hates big groups of people. Won't go to the toilet with anyone except mum and dad. Won't even let grandparents help undress him to go to the toilet or bath. Doesn't show empathy when others get hurt or he hurts them. Comparing him to other kids his age I am starting to think there is something else going on. Any advice?