There were sounds that he repeated 10 times before he managed to move on to the next one. Now there are periods when his stuttering returns for 2-3 weeks, then goes away on its own, and for a year his speech is fluent. I don't know if these relapses are related to any events in his life or if his brain is developing and doesn't have the strength for everything. Now I place more emphasis on working on emotions and resilience than on working strictly on stuttering. Translated with [DeepL.com](http://DeepL.com) (free version)