Name changed for this because I dont want anyone irl to know just yet and apologies for the length.
Basically we are having behaviour problems with ds2 who is just 11 and I dont know what to do. He has become quite aggressive lately which I know is maybe normal for his age but what really worries me is that today he stabbed ds1s friend (who is 16) in the hand with a pen and gave him a right cut. A few weeks ago he threatened to stab ds1 with a knife during some argument, but didnt. Both times he was home alone with ds1 while dh and myself went shopping, at 11 I really think I should be able to leave him for brief periods with ds1 who is 13.5. He is not allowed play violent games on xbox or watch anything on tv thats not age appropriate. He doesnt see any violence in our home, so he is not copying what he sees. He gets a lot of one to one attention, more than his brother or sister really, because he is very involved in sport and dh goes with him to every training session and match. The only thing I can think of that might be linked is that dh has a long term illness and so things have been stressful over the past few years, between hospital visits, finances etc, but we have always tried to keep things stable and positive for the family. After this mornings incident he was grounded for the day, his phone is gone til the weekend, no computer or xbox for 2 weeks and he had to write an apology note to the other boy, is that an appropriate punishment, too hard, too easy? I have also made an appointment for the GP to see about getting a referral to a child psychologist, I want to get to the bottom of this behaviour, I dont want it to get worse and for him to be in real trouble in a few years. I should add that the teacher called me in before the school hols to comment on how his behaviour had deteriorated recently, that he had become cheeky and was mixing with a crowd of trouble makers (but he doesnt see them outside school), and we had acted on that. He is not being bullied, I am sure of that much.
Tell me what to do please, am I approaching it right, am I being ott or not doing enough, I am lost. Ds1 is totally different, I havent had any behaviour problems with him at all so have no experience :(. Thanks