He started peeing in the sink about a year ago and then stopped after being told it was unhygienic. He has recently started doing it again and has been "caught" a few times to which he acts as though something else is wrong, (a sore leg, or feeling sick). Might I add...he checks the coast is clear first. He's also been going to bed around 6pm and then wakens frequently throughout the night thinking it's morning etc. I have recently returned from travelling for a few months and have noticed a massive difference in him. It's quite concerning seeing the difference in him. Does anybody else's parents or grandparents do similar things?