DS is three and finds transition really difficult. For example, he often doesn't want up get out of bed in the morning. Then he doesn't want to get dressed. Then he doesn't want to go to nursery. Then he lies down on the floor and kicks and yells when it's time to get his coat on at the end of nursery and says he wants to stay there. When he goes swimming he does the same when it's time to get out of the pool. Then we get home and he says he doesn't want to get out of the buggy - he either wants to just sit in it or says he wants to go somewhere else. Any thoughts?