My son two month and 6 days old. Due to lock down we haven't been able to do first follow up with doctor. We have been checking his weight like approximate by standing alone first on scale and then with him. Difference between two weight we consider his weight. Everything going smooth except this week where I found drop of 50 gms. His birth weight was 2935 on 11th May it was 4900 approximately but today it showed 4850. He also coughs different from the past three to four days. Does my cough transfer to him via milk. Is it normal to loose weight for any week. Or something serious?