You bring up a fascinating topic. One that is worthy of a conversation and not just a singular response. As I get older, I am more in line with this possibility. I think changing cognitive behaviors, and especially somatic patterns, can certainly have an impact. On dealing with chronic pain, I've done a lot of research and some therapy on neuroplastic pain, and I find there to be parallels with stuttering. With that being said, depending on how severe the stutter, and even if the stutter itself mild/moderate, but the trauma was severe, I think progression could take years, even decades. We formed these negative patterns and negative feedback loops in the prime of our development. I was very severe. I went to an intensive speech clinic in the early 90s. They pulled my parents to the side and said he's [one of the] worst we have ever seen. I still stutter now and still have the severe patches here and there. But I can make hours of work calls, where I still stutter, but minor interruptions. I no longer have anxiety when I speak and no longer fear speaking situations.