My son stutters, I don't stutter, but my brother in law stutters as well as my grandfather. I remember the exact moment we realized my son has a stutter. He was around 3 years old. He's 9 years old now and he's confident. Sometimes I get frustrated with his stutter because he does have some element of control with it. Please put him in a good martial arts program. Make sure he trains until he is at least 16 years old. If you lived near me I would offer you free classes for a year. My heart goes out to you