Suggest Cure For Dry Stuffy Nose

Hello Dr Bhatti, my 4 month old baby has a dry stuffy nose, it is worst at night. It affects his sleeping and eating. His doctor says there is no infection. We try mother s milk, saline drops and run a cold mist humidifer every night. When we use the nose suction device, nothing comes out (we pre moisten with breastmilk or saline drops 1st). My son has had a stuff nose, to the point that I have to clean it in the middle of the night, every night since we brought him home.