Bro I has the same thing for the longest time, up until last year when I started a consulting job and also started college. Then, it stayed in full force and I had to face it. It’s hard with a boomerang stutter, it feels like you should just wait out the stuttering period until the fluent period comes back, and for me that’s what I unconsciously did for the longest time. I cannot, not can or should anyone on Reddit tell you what exactly to do, that work should be sought in a therapist. But I do want you to take a list, an a very in depth and personal one at that, of how you feel, physically, mentally, and emotionally both when you are in a stuttering phase and the fluent phase. Take notes and study what exactly changes. That could help. For me, my stuttering was a breathing issue reinforced with trauma that solidified it in my brain. I’m 19 now and currently retraining my brain to not react to stuttering in the way that I used to. I’d say I currently have a mild stutter, and when I do everything right I can go by unnoticed, but that’s not what it’s about. Don’t glorify the goal of fluency, rather, the goal should be that you are unfazed, and confident in yourself when you do stutter. That’s the goal I wish every stutter would reach for, because in some cases completely fluency is as if you were asking a goldfish to climb a tree. If you want/ need more explanation or have more questions hit me up!