Hi there I need a little bit if advice on what to do I have two children a 4 year old and a 22 month old they both share a bedroom. During the night my 22 month old wakes during the night I have to sit beside his cot until he falls back to sleep but as soon as I leave the room he wakes up an starts crying again. I can't leave him to cry as he would wake my 4 year old and she has to get up at 6am to go to nursery. How can him to sleep through the night without having to sit beside his cot all night?