Stuttering can be overcome with a lot of practice, first try to identify why does your younger brother have this challenge. "When children stutter, you may see these common errors: * Repetition of certain sounds, syllables or words. * Prolonging sounds. * Stopping mid-sound – they stop talking at random moments during sentences." See this and more tips in our blog [https://speechblubs.com/blog/when-worry-about-toddler-stutter/](https://speechblubs.com/blog/when-worry-about-toddler-stutter/)