Hi, if I was not advised to do airway clearance, I would first call my pulmonologist and ask for a respiratory therapy consult to demonstrate. Then I would read this article:
https://smartvest.com/blog/airway-clearance-techniques-for-bronchiectasis-and-copd/
and Google for Airway Clearance techniques on YouTube.
If the pulmonologist said "not necessary" I would find a new doc - this is the cornerstone of managing bronchiectasis and controlling the mucus that harbors bacteria.
Sue