Another mum heere who can def relate to what you are going through.

My eldest is at that stage, everything is re[eated over and over again and she back chats!!Her favourite saying atm is fine then, or i dont like you/your not my friend,

lately she has been spending alot of time in her bedroom.

I just try to ignore it most of the time but if it gets to much i put her in her room.

hope its just a bad day for him.