How can I tell how much milk my breastfed baby is getting?

The question with no clean answer

How do you calculate how much she ate when breastfeeding.

You can't, really. That's the honest answer and it's the thing that makes breastfeeding harder for people who like numbers — which, after weeks in the NICU where everything was measured in millilitres, we very much did.

Going from a chart with exact volumes to a breast with no display on it is a genuine adjustment.

A baby can take a substantial feed in eight minutes or dawdle for forty and take less. Efficiency changes as they get older, and it changes between feeds.

So feed length tells you very little. We spent a while logging every minute before realising the numbers were not helping us at all.

The signs that helped

Swallowing. Not sucking — swallowing. A rhythmic suck-swallow pattern with audible gulps means milk is moving. Fluttery sucking with no swallows means comfort rather than feeding.

How the breast feels before and after. Softer afterwards means something came out.

Wet nappies, which remain the most reliable everyday signal you have.

And weight over weeks. That's the one that actually answers the question, just slowly.

Weighed feeds

Weighing before and after a feed can give a rough figure, and professionals sometimes use it for a reason.

Papa tried it at home. Clever idea in theory. In practice, Ari would not stay still, and sometimes she peed mid-feed, so the numbers made absolutely no sense.

At home it tends to create more anxiety than information. Scale variation, clothing, a nappy that changed weight — the error can be as big as the feed. Doing it repeatedly turns every feed into an exam.

If you genuinely need the number, ask a midwife or lactation consultant to do it properly once, rather than doing it yourself eight times a day.