I think that you should not avoid situations where you have to speak, because this will only increase your stress and stuttering. Recently, my teacher asked me to represent my class at an assembly where people from every class in the school would tell what they would like to change about the school. And yes, I was very nervous, especially when everyone was saying their names and it was my turn to speak. But I did it, and I felt very cool afterwards. So you don't have to avoid such situations. I wish you success!