There are essentially two types of stutters - repetitions/prolongations and blocks. Most everyone has occasional brief repetitions and it's barely noticeable. When someone becomes conscious/anxious about their repetitions, it then develops into blocks (tension, fear and no sound comes out) and secondary behaviors (which can span from awkward to disabling). ​ I've worked with young children for many years and many will speak with occasional repetitions. As I stated above, if the child get the message that their repetitions are a problem (on their own they are not), that's a major factor in it developing into an actual problem. You guys are already concerned, and we understand why. Many of us here are also ashamed of our stutter (whatever kind it is). An infant doesn't understand language, yet can "communicate" with caregivers. It's because they are designed to be extra sensitive to non-verbal cues (facial expression, tone of voice, etc). I suggest making a point to not feel or show concern/distress when the child has repetitions. If people are truly doing this and the repetitions increase in intensity and frequency, then seek out a Speech Language Pathologist who SPECIALIZES in dysfluency. Without the specialization, they are very likely to treat the dysfluency as if it's an articulation disorder, further compounding the original problem.