Hi there! I am a pediatric SLP, and this may be info you’ve already received from other SLPs you’ve connected with but thought I might be able to give some helpful information! At your son’s age it is very common to see periods of disfluency like that. Language is developing rapidly at this time so we often see developmental disfluencies during this period! It’s great that you’re recognizing differences between blocks, prolongations, word, and syllable repetitions. Here are some strategies that I give to parents of preschoolers who I work with to help create a more fluency enhancing environment: 1. Model a slower rate of speech- slow down your speech rate and add more pauses 2. Reduce demands - make more comments rather than asking questions (if you do need to ask questions aim for giving choices or asking more yes/no questions) - especially at times where stuttering may occur more (tired, excited, upset) 3. don’t finish their sentences 4. try to reduce competition for speaking 5. Acknowledge everything they say as important, whether stuttered or not. Repeating back what the child has said so they feel heard. Especially because it seems he is starting to feel frustrated. I sometimes use phrases such as “I love to hear what you have to say, no matter what” sometimes even acknowledging that it was bumpy and that’s okay, what you still have to say is important and I want to listen. I hope this is helpful! It sounds like you’re doing a great job of being present and seeking advice!