Lefty, ditto to the others. There's also a product called "Rain" from a company called Xlear. It's a xylitol-based spray and you might try it, keep it by your bed. Pretty sweet actually but maybe it'll help. Biotene also makes a gel. I don't particularly like it, but you could give it a shot. Since you're in a dry climate like mine you also might consider buying a humidifier if you don't already have one.

Staying close to your dentist is also a great idea, btw.

Let us know how you're getting on, ok?