Yes, but don't get confused. N-600 is something that is applied after you naturalize and your child becomes an "automatic" citizen (some conditions apply for which it seems that you qualify). Don't apply for N600 for your child before your naturalization. You can apply for child passport and N600 concurrently. However, N600 is going to take several months, and passport just a couple of weeks. I would recommend you to apply for both passport book and passport card for your child. You never have enough proof of citizenship, believe me.