My 17 month old has never been a good sleeper, however for the past 3 months, maybe more, he has been awake for hours in the middle of the night. Nothing we do can get him back to sleep. Sometimes he's crying, sometimes chatting. We've tried giving him milk, tried cuddling him, tried sitting next to his cot, bringing him in with us, but he just won't go back to sleep. Has anybody else had this? Did you find anything that helped? Thanks in advance from a very sleep deprived mum!