Andrea,Check out these links:
https://www.facebook.com/groups/152394673762/
This page has about 360 members whom you may be able to learn from and share with re your questions and concerns.
.
https://www.facebook.com/pages/Idiopathic-Subglottic-Stenosis-Tracheal-Stenosis-ISS/230760323624517
This group is smaller however the page looks pretty promising.
Keeping you in my prayers as you face your surgery.
I know how tough and scary it is to face surgery - remember we are here to support you.
Kindly,
Kitt