What helped you feel more confident in supporting your baby's early immune development?

Dulu i memang panic and overthinking if my baby bersin, even bersin yg light. but after i know that imun badan baby banyak kena-mengena dgn usus, i start jaga and monitor apa yg dia makan. i selitkan prebiotik dengan probiotik. Start from there, my baby alhamdullilah dah okay