I have a 3 month old baby and he seems to have an itchy nose. He ll keep rubbing it against things, His nose also gets congested, just in the night. Any ideas why? (He is allergic/sensitive to milk. His stools were neon green until I eliminated dairy from my diet. I also have eliminated soy, gluten, eggs, and nuts in case he had other allergies, but it hasn t affected the itching.)