We started potty training a few months ago following some interest from him and it went extraordinarily well. He took to it straight away and we had probably two accidents in a few months. About a week or so ago he suddenly started hating and refusing to go on the potty and having accidents left right and centre.
He has also been sleeping appallingly over the last month or so. Literally up all night screaming (have tried CIO, CC, sitting with him etc).
Then over the last few days he has taken a real turn in personality. He has always been quite stubborn and strong willed but we had established a good situation by being quite strict (I.e. Ignoring any tantrums, consist with the naughty step if did naughty things on purpose three times in a row). But now he is going absolutely berserk at the slightest thing and working himself into a frenzy. For example, last night he wanted to wear a t shirt that was dirty so we put it in the wash together and I explained that it would be clean tomorrow etc. I would obviously not expect him to fully understand this and not be surprised at him being frustrated etc but it escalated incredibly quickly into total hysteria that would not stop for 45 minutes. This seems to be happening really often (can last pretty much the whole day). He seems absolutely beside himself and inconsolable. But he is also capable of being incredibly jolly.
I know that is likely because he is very tired and it is a cycle but have found it happens even on the rare nights when we only have one quick wake up.
I do work full time but have since he was very small so can't think that would be a factor? He has been at his nursery for about four months and mostly really loves it. We do have a new baby on the way which I'm sure means something but would it have this extreme an affect?
Any advice or ideas about why this might be happening much appreciated!