DS is very nearly 3. He’s been fully toilet trained (in the day time) since last September, without any issues at all.
He’s suddenly started doing wees everywhere. On the sofa, on the floor, etc.
I just don’t understand it. 
Has anyone come across anything like this before?
He’s going through a real terrible two/threenager phase with lots of tantrums and defiance. I’m wondering if it’s in some way related.