I also have interstitial lung disease with ground glass opacities. I was diagnosed in March 2018. My pulmonologist said it has caused damage and scarring in my lung tissue. I also have bronchiectasis and mild emphysema. (I have never smoked!) Everyday, 4 times a day, I use my nebulizer with duo neb solution followed by my vest therapy. I also use mucinex a couple times a day to keep secretions thin. I am on oxygen and doing very well with this schedule. My oxygen level stays consistently at 96-98 percent. I also have to go on prednisone occasionally when I have a bronchiectasis flare-up. All in all I am very grateful for all of this, I am doing so much better than 2 years ago and wondering why I had such a hard time breathing!