Hopefully someone out there can offer me some advice.I have recently had a new baby and after a month of being generally lovely, my DD (2.3 years) has recently started hitting the baby on the head and when not getting attention being very rough with him. What action can I take? Telling her off often results in it being repeated and the other day I just lost my temper and smacked her bottom for hurting him ( first time ever) Is this normal behaviour? I know that toddlers can regress when a new baby arrives, but I am so tired at present that I find the constant bad behaviour for attention really tries on my patience and levels of sanity! Advice needed!