Hi @noahs, welcome to Connect. I'm sorry you are having to deal with so much physical and psychological pain. I know it is more difficult when you feel you are alone. I did a search and found a few members discussing interstitial pneumonitis in the Lung Health group. @ppeschke, @mec1944, and @merpreb have discussed interstitial pneumonitis in posts and may have some suggestions for you.
Has your doctor been able to offer any treatment suggestions for you?