Are you doing daily airway clearance with saline? This was really a game changer for many of us - when I started my journey in 2018, it was barely known in the US, though a lot of people used .9% or 3% saline.
Now, I believe more and more people are encouraged to try this first, and resort to antibiotics if it doesn't either improve or level-off lung and health changes.

Remember - airway clearance can be accomplished a lot of different ways - I am able to clear most of the time with exercise followed by active breathing/huff coughing.