I agree with all of the other comments thus far. Stuttering at that age is very common and should not be a major concern. I believe love and support through the stuttering will go a long way. If the child becomes too discerned by their stutter or thinks too heavily on it, I believe they would be less likely to grow out of it. I had abusive parents as a young child and had no support when I began stuttering. I still had the stutter when I entered school, and was then bullied for it. I was able to get with a speech pathologist in my teens and found relative fluency. I believe lack of early support is a primary cause in adult stuttering like myself, so you are already making the right choices.