Kahak di baby 3 minggu tu normal je, especially kalau dia breathing okay dan tak ada demam, tapi sebaiknya check dengan pediatrician untuk confirm, especially since dia punya kahak banyak sangat. A few of us mums noticed our newborns punya phlegm dalam first few weeks, and some paed suggest just monitor, some recommend saline nasal drops if really blocked, tapi kena professional advice dulu untuk baby setua ni.