My DS has been consistently waking between 3.30-4.30 every night for about a month now, some nights he also wakes at midnight. Some nights we have success in settling him back again until about 5.30, but most nights he will not go back to sleep. I'm at the end of my tether, dealing with lack of sleep an energetic boy and strong willed 3yo DD. We are very consistent in our approach, never really give in, but where controlled crying seemed to be working previously, he now is getting more and more distressed at being left, ie we used to be able to put him down for naps and bedtime awake and he would chatter happily to sleep, now he stands up screaming straight away, we have to wait in his room until he s asleep or keep a hand on his back. He seems to have forgotten how to self settle, why? any ideas and any ideas how we can get sleep back on track. I am pretty sure he is not in any pain as nights when I've given him nurofen or calpol have made no difference. He always has naps in the day so not overtired, and I don't think he is having too much sleep esp considering night wakings. Any advice welcome, thank you