Pure saline drops can be helpful too, just 2-3 drops can really help keep things moistened and moving around. The nebulization will help too, although you should still do the flushes. With Milo we flushed his nose and then did the nebulization treatments so that all the crud was gone and the medicine could get to where it needed to be.
You may want to consider asking your vet about artificial tears when you nebulize, the fog can really irritate the eyes and the artificial tears will help protect them