I breast feed my baby during the day & at night she gets one formula bottle that my husband feeds so I can get to bed early.

Well today I breastfed her as usual & she latched off a bunch of times so it thought oh okay she’s full...but kept fussing so I decided to “top her up” with formula. She ended up CHUGGING like 4 ounces & didn’t stop!? Does this mean I’m not producing enough breast milk for her? Ahhhh.