My son is now 3.5 and will now sit at circle time in preschool, but he is the same as your boy in all aspects. I really did think it was my parenting, but i do see it in a lot of 2yo's that are more independent and bore easily. I am glad now that my son was more independent and enjoys the things that make him different than other kids. I don't think my son is exceptional or advanced in any way, he just has his own interests (and sitting for story time was hardly his way of having fun when he was a curious 2yo!). I am very proud that he does sit now (w/ some urging on some days) at 3.5, and to be honest I did think he could have been an ADD candidate back when he was 2, but nobody else thought so, so that was reassuring. It gets so much better as time goes by, you will be amazed at how much changes from 2 to 3! GOOD LUCk too, w/ new baby, my son was totally turned off by my daughter's arrival but he LOVES HER SO MUCH NOW, it's so great having 2! xoxo