stuttering is such an interesting thing, how unpredictable it is, my whole family had it, all of my family said that once they went to university it started to fade, because they had to take care of themselves for the first time, they had to do all the talking etc, so exposure, but it was the opposite in your case.. idk tho, i also have those random days where my speaking is randomly good or bad, though i still believe that its possible to beat it, weather i beat it by overcoming it, or i beat it by not letting it affect me anymore, either way its not a dead end imo