I've had stuttering since I was 5.

I've had stuttering since I was 5. Now that I am 14/15 I started to see that my stuttering had decreased over time, but I still have my doubts about if it is neurological or not. I've had speech therapy when I was younger and as I expected it didn't help. Even if I stutter less now, will it keep decreasing or will it stay put at one point without changing over time?