This is a reply I made on a similar post. It was for someone who went to an intensive program, but it's essentially the same techniques. Your experience after the intensive speech therapy program is the common experience. This is what happens to the vast majority of people because those programs operate in a safe, secure bubble. Even if in the last few days you go out and apply what you learned on public and it works, that's residual carry over from the bubble and it's temporary. I had the same experience. I know many others who had as well. They claim the techniques work because they work in the bubble and if you can't maintain it, it's not because it's a flawed therapy but it's because you didn't work hard enough. They claim total credit if it works and abdicate all responsibility if it doesn't. The fact of the matter is, it's not your fault. These kinds of therapies do not work for the vast majority of stutterers. They focus on the wrong things (fluency) and don't address things that make stuttering difficult (tension, shame, efficiency/movement, spontaneity/expression, etc.) What helped me was finding a therapist who knew how to help with those things. I was shown that fluency didn't matter and focusing on it only made it a bigger part of my life. That I could stutter naturally, comfortably, say everything I want and not have negative feelings about it. Obviously much easier said than done, through that therapy stuttering because a much much smaller part of my life than it was and no longer controls it.