How to deal with 2.3 yo DS's new love for hitting

[SanneSannes]

2.3 yo DS has always been a very sweet and social little boy. When other children pushed or hit him in playgroups he simply got up and went somewhere else. However he has now developed his love for hitting, mostly when he is tired or over excited. His targets include his 6 mo sister, whom he gives a kiss in one second and then lashes out the next. He seems to think its hilarious although we have obviously shown him that we do not like this behaviour, but I just dont know how far in disciplining you should go at this age? What is the best way to deal with this at that age. Please share with me any tips as i am worried im not dealing with this very well and therefore might create an issue between brother and sister

First of all,please don't worry too much,it is normal for kids to have a hitting phase. At the age your dd is, you can focus on his behaviour so if he hits another child I would say we don't hit and remove him from whatever fun you are having, e.g. If at a playgrouo then go home.

If he hits dd I would put him slightly away and say 'we don't hit' and pick her up for a bit of 1-1 attention.

I wouldnt make it about his sister not liking it so much as 'in this family we don't' as then it is not an issue between them it is your rules iyswim.

I would only advise the same as above. We had the same problem. 20months between ds and dd and ds started hitting and pushing about 4 months after she arrived. I think it was partly age and partly that dd was starting to get interesting and as such a different jealousy was rearing its head.
Just breathe, remove him from the situation and say no. He's nearly 3 now and loves his sister (most of the time) and hasn't pushed or hit anyone for a good while!

Many thanks Yellow and Mrs! Think i definitely need to work on keeping my calm better, especially when he lashes out at the baby...which apparently wakes a tigress instinct in me and im sure that does not help ....well, today is another day and i will try what you suggested!