I have a 21 month old and he’s never slept through the night no matter what techniques of advice we have followed. It doesn’t matter if he naps or he doesn’t he still will not sleep all night. At nap time he will scream and shout for a long time before he eventually falls asleep. We make sure he isn’t too hot or cold, not hungry or thirsty, clean nappy and comfortable dark room but he just doesn’t sleep. I feel awful but after all this time it’s catching up to me and I feel mentally drained.