It's such a weird coincidence, I am currently doing my cadet program and in the phase of getting my cpl. Today I randomly searched why I can speak completely normally when I am alone but stutter in front of another person and this led me to this subredit and first post I see is yours. But yeah sitting in the plane with your instructor and even giving that start up call to the ground increases my anxiety soo much and it feels really bad when it affects your calls and your performance in the cockpit.