As regards the stuffy nose, most cold and cough both in children and adults are caused by viruses which will run their course with or without any medication.

On what to do... 1. keep baby warm: if there is fever Please uncover the baby and give paracetamol in appropriate dose or Tepid sponge to bring the temperature down. 2. You can do steam inhalation with your baby (both mother and baby or father and baby). Never leave baby alone on steam inhalation. If nose is congested, you can give saline drop in each nostrils to help decongestant the nostril. 3. If you have a room heater, you can use it to make breathing easier for your baby. 4. Continue breastfeeding baby exclusively.

It's not advisable to use anything. There's no cure for the common cold. Antibiotics don't work against cold viruses. Try to make your baby more comfortable with measures such as suctioning nasal mucus and keeping the air moist. Take steps to make your baby more comfortable. These include moistening the air in your home and using saline drops and a suction bulb to remove mucus from your child's nose.

Please see your doctor

Nebulisation should help him breathe better. Don't worry. If he gets uncomfortable again. Please, Inform your doctor immediately