I have a friend in Ireland who is taking the big 3 three times weekly all the time. Her consultant told her that MAC never really goes away. She has no real side effects but she is very thin. She had to give up work as her stamina is reduced and she gets fatigued. She is a biochemist. Different countries seem to adopt a variety of approaches. I would be worried that I would become resistant to antibiotics and my gut would be stripped.
I have an rescue pack if I get a bronchiectasis flare up but have avoided taking it. As a teacher I am exposed to so many germs. I get anxious when children have coughs and colds! I am meticulous with hand washing. I hope you will be ok on your maintence antibiotic.