Hi Magicrabbit,
Our ds is about the same age as yours and has gone from being a brilliant night and day time sleeper to being very unsettled in the last few weeks. I too am knackered!! He started waking at 5-5:30am and did this for about 2 weeks every morning, then he started to get unsettled at night too... he has also started refusing to nap in his cot during the day, although I know that he is tried. In the end the lack of sleep seemed to be making him even more unsettled. he has even have a few nightmares, screaming and crying with fear. of course, we rush to him and resettled him but if this happens in the later earlier hours then getting him back down was so difficult.
The other thing that I noticed at the same time is that he is developing some fears about things - bears, dragons, lots of concerns about being left alone. He can articulate this and constantly calls us back to him when we put him down to sleep at night, although going back to him seems to just prolong it all as he calls out again as soon as we have left him.
The early morning wake ups seem to be lessening... basically he wakes up saying, "It's morning, mummy, time to go downstairs." and I say that it's still night time, that daddy is asleep, the doggies are asleep etc etc We do have black out blinds on top of black out blinds so that does help but the darned light still changes in the room around this time. The first few mornings, I weent back to resettle him so many times - he screamed and yelled and was utterly furious. One morning it took him nearly an hour and a half to go back to sleep by which time the rest of us were getting up. But, I know him too well - he'd just do the same again the next day if i didn't insist. This morning he slept til 8am... thank goodness... after being just a bit unsettled in the night.
Getting him to bed tonight, though, was still a drama with negotiations worthy of a trained UN professional.
I wonder whether having a night light at bedtime would work on a timer - anyone else used a night light with a little one at this age?
Hope it's getting better, Magicrabbit?