Hi Doc, My Son Is 5 Months Old.he Had Severe

Hi doc, my son is 5 months old.he had severe cough a week before, given mucolite and sinarest drops for 2 days, now he is not able to breathe properly coz of excess mucus. Bcoz of the same reason he is not able to take feed and sleep properly and crying always.nose is filled with thick mucus I am also using saline water but not helping much. how can I help him? Should I continue with mucolite?