If you're breast-feeding your baby, keep it up. Breast milk offers extra protection from cold-causing germs...Thin the mucus. Your baby's doctor may recommend saline nose drops to loosen thick nasal mucus. Look for these over-the-counter drops in your local pharmacy..Stay cool. Dress in light clothing, keep the room temperature cool and sleep with only a sheet or light blanket...Consult your pediatrician for clinical examination they will do the needful.