DS will be 5 in a few days. He hasn't just started school, but the big relevant piece of information is that about a month ago we moved country, so he is having to deal with new house, new kindergarten, new language. Obviously this is a big thing for him, and I expect his behaviour to reflect this. That's fine.
But there is such a big difference between how he acts for me and how he acts for DP, and most of the behaviours reserved for me aren't new, they were happening back in the UK and they have just escalated now.
I think the problem is genuinely me. He isn't perfectly behaved for DP, but if DP tells him off he at least seems to take it in, with me he tries to fight back! It's like he sees me as a sibling, rather than a parent - he even says to me sometimes, if I impose a consequence on him "I'll tell Daddy when he gets home and he will tell you off!" and tries my own words back at me "Mummy you took my toy and put it on the shelf, we don't do that, that isn't nice." (I'd put it on the shelf because he was hitting me with it!) or threatens "Well, if you put me in my room then you don't get to go on your computer!" - I'm always at a loss as to how to deal with these as well. I explain to him that it doesn't work that way and that he is a child and I am an adult but it doesn't change anything.
It's really getting me down, and the worst part is that I can see I DO go into sibling mode with him. I can't seem to help it, it's just my natural way to react to him. I don't know if it's because I had him young and didn't know any other parents and the only form of reference of young child I have is my sister, but I can hear it myself - my voice goes whiny like a teenager saying "Just leave me alone!"
DP just seems to know what to do and how to deal with things and I seem to make them worse. I started reading a book called "When your kids push your buttons" which was helping me not react to stuff as impulsively, but I still can't seem to get to the mindset of finding my inner parent, I just default back to this childish way of being with him.