Ahhhhh!!!! So he's slept through 2 nights out of the last 5. I have slept 1 night out of 5. I fell asleep last night and I have no idea when he got up but he has been absolutely feral today.
I need a break so I've sent him to my mum's tonight - where he still sleeps in a cot.

I am going to try something very random, I'm going to put a sensor at his door (like at the fish and chip shop) and it'll make a sound in my room when he leaves his room. That way I can get up an walk him back - for as long as it takes.

My well behaved little angel has become a feral, rude, rough little pig! Even my mum called and said she is exhausted because he has been hard work all day.