Not too long ago, we spent a week in the kitchen crying over the eggs because he thought they were too cold living in the fridge and the only way to remedy this was to put a blanket on them.
While it might seemed absurd, enjoy it! Soon enough the solutions to his problems will not be so easy to come by!
While I can't answer your one child/multiple question, I know that having a "normal" daughter has helped us to have some perspective and consider our weird child also quite normal - does it make any sense?
