At wits end. 2 year old has always been a dreadful sleeper but it's got worse in the last month. He woke in the night at 2.45 and is just awake now. Won't go back to sleep. Nothing gets him back to sleep. The night before, it was midnight - 4 am, eventually getting back to sleep before waking at 7 (other child up at 6 though so no lie-in for us). It's been a similar pattern for weeks. Before that he would at least sleep through a couple of nights a week but this is relentless. He screams (not an upset scream but a wide awake screechy one) so we can't leave him and when we bring him into bed he just tries to get out and pulls our hair etc. The screaming is a new thing. We could often let him get himself back to sleep before but the scream is 'wake the neighbours' volume. Just exhausting.