At this time of the year this condition is unavoidable to most kids. I'm giving you a home remedy you can use even on a regular basis.
Next Steps
Dabur Lal Tail or Mustard oil 20ml
Pure ghee 20ml
Eucalyptus oil 2 to 3 ml
Mix ghee and mustard oil/lal tail and warm it a little bit. Then add eucalyptus oil into that oil mixture.
Apply on the thoracic region (around the rib cage) & on the neck at least twice a day. Especially before putting the baby to sleep at night.
The baby might cough up phlegm in the morning, please don't panic.
Health Tips
Keep the baby warm and if the baby is being fed mother's milk, mother should avoid taking cold food and drinks.
If the baby's blanket ks furry, wash it with disinfectant to get rid of dust particles and the microbes that might be residing on it.