He has recently started biting his 10mth old brother . With bad behaviour we have been sitting DS1 on the stairs for 2 minutes, but he bum shuffles up and down the next stair so I don't think he quite sees it as a punishment although when we tell him why he's there he automatically say sorry to his brother. This morning he bit his brother again but this time I put DS1 in his room - not sure if it had the right affect as he ended up screaming and calling for his 'raggy' which I did not give him. After a few minutes I went up and explained that he does not bite or hit his brother and he was nodding and understanding. We came down and he said sorry to DS2, since then, he's been good for an hour but poor DS2 has 3 bite marks on his back.
How do I go about solving this problem before I pull his teeth out