just saw a infectious disease doctor

I am 77 years old and have been dealing with Bronchiectasis and MAC for a little over 6 months. My pulmonologist has me on a nebulizer with two solutions, budesonide-.5mg and a sodium chloride solution-3%. It seems to work in that I have good clearance and have coughing under control and can function with some fatigue. I also use an aerobika.
After viewing my sputum samples and CT scan, the infectious disease Dr. suggested that I start on a three antibiotic treatment of azithromycin, ethambutol and rifabutin for a period of 1-2 years taking the antibiotics every other day. I am resisting this program thinking that so far my saline solution is allowing me to clear my lungs. We agreed to continue what Im doing and to another appointment in three months time. I'll also meet with my pulmonologist. What do all think of my situation? Thanks for any comment