My 18 months lo used to sleep thru the night. We will pat him and he will fall asleep. I don't know what happened recently, but he would just suddenly be completely awake asking to get out of bed at 2am. He cries his heart out standing in his bed. Once out, we cuddles, lies there, but wouldn't want to fall back to sleep. As soon as he does, putting him back to bed, the crying starts all over again. Any tips? I do not want him to be spoilt falling asleep next to me and stay with me all night. Thanks for sharing your advice!