Can anyone help... DS (2.8) cannot seem to be in the same room as DD (1.1) without hitting her. I expected some little fights amongst them but I'm beginning to feel that DS behaviour is getting out of control. It started with hitting and pushing now it's punching and throwing toys at her. Only today I managed to stop him from hitting her on the head with toy farmyard building which he was holding above her head as I reach out to grab it he was still trying to hit her on the head, another thing I noticed today was DS covering DD mouth with his hand (very alarmed by this).
Can someone tell me if this is just normal behaviour among siblings, this behaviour is new to me with DS he was always happy to play along with DD. Also should I be prepared for this to continue for a while longer and if so how much longer. Any feedback would be great at this stage.