Raney, you asked, “ Is there any way to shorten the time of nebulizer?” Smart aleck answer: yeah turn it off earlier. Actually though that’s the thing to do. Throttle back a bit and see what happens. If you do that and live to tell about it do it again a few days later. If things go South, e.g., a flare up into full fledged bronchitis with fever it’s probably time to cool your jets for spell. You probably get the drift. I discovered I get along okay with one rather than two nebulizer sessions daily. Try it and see what happens. Don