DSS 7 has started with really erratic behaviour. He has been lashing our at our 2 year old taking things of him and being very un kind with his choice of words to him and now ds is starting to repeat things he's saying. I am expecting and dss mother is also expecting. Dss also has a sibling at his mum's house whom she says he treats, in the same way. She says he is like a bully to her.
We all get along fine and dh and dss mum often speak on phone to discuss the behavior so each is in the know of what's been going on.
We have been away for a few nights in half term dss as told off by me for being rude and I told him I was taking his ds away as punishment. He then told me he hated me, and proceeded to punch the walls. He then left the room and ran away from us out of sight.
We are at our wits end with him we can see he is frustrated with the situation, but we don't know what to do about it. He gets a lot of time alone with each parent.
Dss mum has suggested changing contact to her having him through the week us at weekends unless she has something planned. Dh has said no as he thinks it will end up being sporadic contact. Currently we have him 3-4 nights a week.
What is the solution here ? I feel like upping and going the stress is starting to take its toll.