Update:

Monday: W calls me to update me on the behavior of the boys at school. One of them had been misbehaving. I talked to him over the phone to tell him daddy will be angry with him also when he's bad at school.

Tuesday: W texts me that they have been good at school today. Then that they are doing so good at swimming lessons, joking around a bit.

Wednesday: I pick them up today and they have been good. W texts me to check how they've been today.

Keeping the course!