How to know if I'm overfeeding newborn?

[trrk]

My 4 week old is being mostly bottle fed with a combination of breast milk and formula. We are trying to to do paced bottle feeding and responsive feeding but as a FTM I'm not sure if I'm getting it right. She usually takes 3-4 oz every 3-4 hr but sometimes still seems hungry (mouth open, rooting around, crying) and then we offer her another ounce or so. She spits up some milk after most feeds with larger amounts spit up after the larger feeds making me think she didn't actually need the extra milk. Does this mean she's been overfed? Should I offer a dummy instead of more milk when she seems hungry after the initial feed? Sometimes she is also unsettled during and after feeding making me wonder if it's reflux. Is there a way to tell the difference between spitting up due to reflux and spitting up due to too much milk?

Spitting up is normal. My daughter did this all the time when she was that age and she EBF. It's because the opening to the stomach is immature and it flaps open sometimes, I think it talks about it on the NHS website.

I would say if you're pace feeding and your child is showing hunger signs, always offer.

I would agree with Robyn, and would like to add you sound like you are avoiding doing the 'twist' where you follow the baby's mouth with the teat when they turn away and twist the teat to squeeze in that extra swallow or three. The 'twist' over-rides the satiety signals that baby gives, a really bad idea. Your responsive feeding is the way to go.

Congratulations on the birth of your baby, do sniff her head for us. [heart eyes]