I am in the same boat right now about how to try and find balance with my 2 1/2 year old. He is so obsessed with numbers and letters and shows little interest in anything else. I am worried that this is not healthy or balanced. I wish he would get involved in other activities and show interest in playing with other kids. Instead of playing kickball he'll just go "b a l l" ball, while signing it with the sign language alphabet and be satisfied with that. I want him to be able to get out there and actually play more. It is worrying me.