Honestly, the most important thing in my opinion is to let him speak as much as possible. I started stuttering at 5, and I always avoided speaking, which ended up making my stutter worse as I got older. More speaking will give him time to further realize the anatomy of his stutter, and find new and easier ways of overcoming it. Because many stutters have no known cure, it's important to learn ways around it. Remedying it very young helps tremendously. Him using voices or choosing easier words is a **good** sign - he's not quitting trying to talk, he's working with it. And of course, just being supportive is paramount. I see too many parents in my life telling their children to "hurry up" and "spit it out". It's so discouraging and damaging, it's unbearable for a child so young. Much luck and love to your son!!