The same thing happened to me. My son is 17 now and started stuttering when he was about three years old. Like you I was heart broken. And saw my difficult childhood being replayed live through my son. The silence brought on by the fear of the stutter, the pushing away of friends because communication is to exhausting and embarrassing. But then as time went on I remembered how much stronger I am because of my stutter. So I try not to fix my son’s stutter, instead I try and make him accept who he is stutter and all. Alter all that’s when I mostly lost my stammer. When I stopped caring what others thought of me. As a stutterer I have lots of empathy for others a gift that I would not have if I didn’t stutter. Also watch this doc. It’s a good reminder of how to not try and fix a stutter but accept it. Something I wish I knew when I was a kid. https://www.youtube.com/watch?v=fvRwAhL4W9E