Oh, so he's just clumsy with his right hand then? I hope he can get used to it, Anon broke her dominant arm when she was 6, and had to write with her left. Luckily, we were working on handwriting in class! Anon could write just fine with her left hand then, and when the cast finally came off, she was temporarily ambidextrous. However, she neglected her left arm soon after, and now it's a useless-doodle like anyone else's non-dominant hand. It goes to show though, yadda yadda practice etc. if you really have to blah blah dominant sides can switch moral practice you get my point
Although my right arm is annoying to some degree now that it doesn't bend straight and some things are a pain, but eh who cares