My DS who has just turned 3 has always been a crap erratic sleeper. Of late though, he has taken to being awake in the night for hours. Last night he was awake from about 3am until just gone 6am. He is not upset, he sings or chats quietly to himself but it means that we are both knackered the following day. Most times it's happened I have been working from home the following day so we have both been able to sleep on in the morning but that isn't always practical obviously. Any thoughts? Suggestions? Sympathy?