seen it now! I don't know if it will work for you but what i do with Liam, who is 6, is have a few house rules eg being kind and gentle to everyone, looking after things, talking nicely and talk about these asking why they are important and what happens if they are broken. Unless he does something really bad i give him a chance to change his behaviour then i would take away something he loves, i then give him the chance to earn it back if he is really good for a while after. I also put him out the room if i feel he needs to calm down. I always try to talk calmly but as though i am not happy. I rarely have to do this though. Most of the time i will give praise to every little good thing he does, Liam seems to need praise, so i try to notice all the little things, like asking nicely, being kind to Riya, helping me etc. He also gets rewards like treats, stickers etc for good things. I also give him responsibilties around the house, like taking plates in, hoovering own room and he gets pocket money for jobs. He is much younger than your son though so might not help you. Is he interested in helping you with Theo at all? If he is it might be good to encourage it, giving him positive things to do instead. If he says he's angry i guess he may need to talk about this to someone he trusts, an older male who he looks up to maybe? I am very close to my friends daughter who is 9, she often talks to me instead of her mum as i think she finds it easier. Hope it gets better for you x