My DD is 3 1/2 and to be honest I haven't done anything re night time training. She is completely day trained, but wears a "night nappy" when she goes to bed at night. I found with my DS, who is now 5 1/2, not putting a nappy on him at night and trying to wake him up to go to the toilet before I went to bed just didn't work - he would wet the bed anyway. So instead of him wetting every night and having to wake up and get clean jarmies and new sheets, I just put a night nappy on him. He was dry on his own at night by the time he was 4 - he just simply no longer wet his nappy, and that was that. So I am doing the same with DD.