If I visit ShiaChat before my breakfast, my breakfast might be postponed until lunch time. One day, it was a Saturday or Sunday, I was so busy at SC that I had my breakfast about 3 pm (1500 hours). I have made it my own personal rule to not come to SC unless I had my breakfast first.
I am not arguing agaist your claim that mothers milk differ depending on the childs gender. It very well may be so, I dont know. I just say the difference in weight is minimal, and the more fat, the lighter it becomes. Milks weight, fat or less fat, is almost the same as that of water.