Dry nostril/sinus even with humidifier & nasal spray?

26F, 150 lb, I've been having sinus issues for the past few years but last year my ENT told me to use a humidifier and nasal spray. Of course, it didn't help. But it affects my sleep (I can't sleep if one of my nostrils feels cold and dry), every day of the year pretty much.

What do I do, besides the obvious humidifier and nasal spray?