I only stutter at a specific moment

I only stutter at a specific moment Hello, I only seem to stutter when I pray, I don’t know why? It all started like a month ago, before that it was all good and fluent, but out of nowhere i started to stuttering. I already had stuttering problems in my life, but it was never so severe during the prayer. I never used to stutter during my prayer until a month ago. I would say 95% of my stuttering is only during prayer. Does anyone know why?