Hi, My ds has been a good sleeper since six months old. He doesn't exactly like to go to bed but accepts it. Recently he has started to wake in the night around 2/3am and start screaming. Won't self settle (I've left him around 20mins) and is incredibly difficult to settle after I go in to him. I have tried to say 'Its still bedtime, Night night' and give him a cuddle and walk out but he clings to me, sobbing. After relenting and going through bedtime story he still cries as I walk out of room. It seems to reassure him slightly if I then leave the hall light on. I have dd 6 months too who is not yet sleeping through so am shattered. Any suggestions about what is waking him and how we can stop a pattern emerging? Thanks.