Are our "good days" the blueprint in curing stuttering?

Are our "good days" the blueprint in curing stuttering? So, I was thinking about this, as y'all know every stutter has their "good days" and "bad days," meaning that we stutter more or less depending on the type of day. My stutter goes from mild to super severe when it's my "bad days" to the point were I stutter every word and can't form a proper sentence. Since it's been proven that stuttering is caused by neurological wirings in the brain, what makes those "neurological wirings" improve our stuttering to the point were some stutters go from severe to fluent overnight? And vice-versa were our stuttering goes from mild to severe in our "bad days." What is happening in our stuttering brains when it's our "good days" that make our stuttering better? Maybe we can use what is happening in our brains when it's on a "good day" to lay out a blueprint to cure stuttering. Let me know what you guys think. Am I overthinking this or what?