DS2 has started hitting when he is frustrated or angry, such as when we say 'no' to something.
He will hit any of us and fortunately DS1 doesn't retaliate (yet!).
I am holding his arm and firmly telling him 'no we don't hit' which kind of works at the time but this morning, I did that and then he started deliberately stamping on my foot which took me a bit by surprise.
How do I make sure it is just a phase? (Don't remember DS1 going through this!)