My DD is 9 weeks old and for the past 2-3 weeks has been having issues with what sounds like post-nasal drip/mucus in her throat. It started with snoring during sleep and grunting during wake times but it's now affecting her to the point where she can only sleep in a really hot and dry bedroom with fan heater on. Otherwise she tosses, turns, wimpers and gasps. I know this setup is a risk for many reasons but I don't know how else to help her sleep. GP isn't concerned because she's eating and otherwise bright, so no help there...