((Trembling Voice))

I used to struggle talking with people myself when I was much younger. I found my voice babysitting and being around children. What you could try is to donate your time at a library or even maybe where your son goes to school and read to children.
It can bridge a gap for you to getting to a point where you feel more comfortable talking to the children as they react to the stories. That can be a bridge to eventually feeling more comfortable talking to adults.

(((Hugs)))
Open Eyes