Hello and thanks for your question. Rule number one is always - if your concerned, see a doctor. For mucus in the nose you can use an eyedropper to suck it out. You can also buy nasal sprays that only contain water. This helps to flush the mucous out of the nose and the back of the throat. Don't use tap water as this may contain bacteria.

Steam is also a big help. Using a room vaporizer that moistens the air helps to dissolve the mucous making it easier to either such out of the nose of for baby to cough up. See your pharmacist - they may be able to recommend oils to put into the vaporizer.

A steamed up bath room can get things started.

hope that helps