So I know that your breastmilk decreases in volume and increases in fat content as the day goes on. But I was rather alarmed to pump 1-1.5 oz less during my afternoon sessions than what I usually put in LO's bottles! Today is also my first day back at work and first time pumping more than 1-2x in a day, so I'm a total noob

Does your total of pumped milk change throughout the day? More importantly, do you put the same amount of bm in all of your LO's bottles? How do you know how much to give??