DD is 2.9 and seriosuly only wees 2 or 3 times in a day - this doesn't seem normal to me, although ds who is 4 is similar, but he is older. Neither of them drink very much - I have started to leave a bottle of water each out so they can drink throughout the day (like they do at nursery), but they hardly touch it. Other than this they may have a little milk and one glass of squash or juice per day. Should I be worried?