Breastfeeding Basics, as I Learned Them

The single most reassuring fact I learned: a newborn's stomach at birth holds about 5–7 ml, one teaspoon. Colostrum, the first milk, comes in small amounts because small amounts are exactly what fits.

How the stomach grows

• At birth: ~5–7 ml, a teaspoon
• Day 3: ~22–27 ml, about a walnut
• Week 1: ~45–60 ml (1.5–2 oz), about an apricot
• Weeks 2–4: feeds keep growing, reaching around 4 oz (~120 ml) by one month

When the milk actually comes

Nobody tells you this clearly enough: milk does not arrive the moment the baby does. It takes days. That gap is normal, and it doesn't mean anything is wrong. The tiny stomach sizes above are the built-in reassurance: in those first days, the small amounts of colostrum are exactly what your baby needs while the supply builds.

What helped mine come in and keep up:

• Pumping. Supply works on demand. The more the breast is emptied, the more the body makes. Pumping kept that signal going for us, since latching wasn't happening.
• Lots of water. I kept myself relentlessly hydrated.
• A healthy, balanced diet, with a lot of spinach, bottle gourd (lauki), fennel, and fenugreek seeds. All foods traditionally recommended for milk supply, and they were regulars in my postpartum meals.
• Broken wheat cooked with milk and dry fruits. This one helped a lot. It became a regular breakfast during those weeks.

The jaundice panic nobody prepares you for

It's very common for a newborn to have some jaundice. But if nobody has told you that, you panic, and panic and stress work directly against milk production, at exactly the moment you're already worried there isn't enough milk. One worry feeds the other.

I knew about the jaundice beforehand, so when it showed up, I didn't panic. That knowledge is the entire reason I stayed calm, and it's the reason this section exists: I'd like it to do the same for you.

So hear both halves now, before you need them: it's normal for a baby to have some jaundice, and it's normal for your milk to not come immediately. Neither means you're failing. Your care team will monitor the jaundice; your job is to feed, rest, hydrate, and let the supply build.

The weight dip that's supposed to happen

Along with the jaundice, there's another normal thing that reads as alarming: newborns lose weight after birth. A drop of up to about 7–10% of birth weight in the first days is expected, and much of it is fluid. Climbing back to birth weight typically takes ten days to two weeks, sometimes longer. Watching the scale go the wrong way in week one is exactly the kind of thing that feeds the panic loop above, so know it's coming.

For rough reference, the average newborn at birth (WHO growth standards):

• Boys: around 3.3 kg (about 7.3 lb), around 50 cm long
• Girls: around 3.2 kg (about 7 lb), around 49 cm long

Those are just averages. Healthy babies arrive in a wide range around them, and your care team tracks the growth curve over time, not any single reading.

And about your own weight

I'll say this one with a smile: you'd think that the moment the baby is out, all the weight goes with them, baby, fluid, everything. That is not what happens. The birth takes off only a part of it. The extra blood volume, the fluid, and the energy reserve your body stored for feeding all leave on their own schedule, over weeks and months. None of that is about discipline. Your body planned it this way. Give it the same patience as everything else in this section.

Frequency

About 8–12 feeds in 24 hours, every 2–3 hours during the day, stretching to 3–4 hours at night. It's relentless in the early weeks, and it's also exactly what normal looks like.

How much, and why the chart isn't the boss of it

The stomach-size numbers above are only a guide, and your baby doesn't have to follow it. Ours didn't. Our baby settled into taking 60 ml every 2 hours and stayed there for a few months, simply never taking more than that in one feed, chart or no chart. I stopped comparing after a while and just followed our baby's lead.

Which is really the whole lesson: follow your baby's cues. Your baby will let you know when they're hungry, and will let you know when they need you generally, feeding included. The chart is background information. Your baby sets the amount.

On formula, it's okay

Because of the tongue tie, latching wasn't an option for us, and on top of that ours was a genuinely hungry baby. So we fed a combination of pumped milk and formula. It's okay to introduce formula. Whatever gets your baby fed and you supported is the right call, there's no extra credit for doing it one way over another.

Latching and unlatching

A good latch covers the whole nipple, with baby's chin touching the start of the areola. In the beginning, latching is mother-led. You position and guide. And it takes real effort. Even with everything done right, it still does not work so many times. That is no one's fault, not yours and not the baby's.

Unlatching has a trick I was taught early: the baby creates real suction, so break it first by slipping a finger into the corner of their mouth, then move the baby. Pulling against the suction is how nipples get hurt.

The tongue tie nobody caught

Our baby didn't latch, and for six weeks, I thought it was me. I kept blaming myself for not being able to make the latch work, going over the technique again and again, convinced I was doing something wrong.

The culprit was a tongue tie: a band of tissue under the tongue (the lingual frenulum) that was shorter or tighter than usual, restricting the tongue movement a proper latch needs. There's a lip version too, a lip tie, where the tissue connecting the upper lip to the gum is tight enough to stop the lip flanging outward onto the breast. Either one can make latching physically difficult for the baby, no matter how good the mother's technique is.

Doctors do normally check for this at birth, but ours wasn't evident, and it slipped through. It was only at the 6-week appointment that one of the midwives identified it. Six weeks of failed latches, and the whole time it was never something either of us was doing wrong.

So this is the part I most want another struggling mother to hear. If latching keeps failing despite doing everything right, ask your care team to check again for a tongue or lip tie, even if they looked at birth. The subtle ones get missed, and the cost of the miss is you blaming yourself for something that was never about technique.

If you pump: get the flange size right

The flange is the funnel-shaped part of the pump that fits over the nipple. Its size is one of the most under-explained parts of pumping. A wrong size hurts, and it also costs you milk without you noticing. A poor fit means poor milk removal, and poor removal signals your body to make less. Pain, damaged nipples, and a dropping supply can all trace back to nothing more than the wrong flange.

The size is about your nipple diameter, measured in millimetres. It has nothing to do with breast size. And the standard flanges that come in the box (usually 24 mm) are the wrong size for a lot of people. Measure, compare against the pump brand's sizing guide, and re-check as your body changes over the weeks. A good fit looks like the nipple moving freely in the tunnel without much of the areola being pulled in, and pumping that doesn't hurt. If it hurts, question the flange before you question yourself.

Caffeine, still no

I cut caffeine completely in pregnancy, and breastfeeding did not bring it back. Caffeine passes into the milk, and a baby's tiny system takes much longer than ours to clear it. What that looks like in real life is a baby who is wired when they should be winding down, fighting sleep and having trouble going down. And it catches up with you eventually, because if the baby doesn't sleep, you don't either.

Vitamin D for baby, the one I almost missed

In Canada, a daily vitamin D supplement is recommended for breastfed babies. I used to think of it as a cold-country thing, but the real reason is sun. At our latitude there is not enough of it for most of the year, and milk on its own does not supply enough either. Ask your care provider about the dose for your baby specifically.

When pacifiers are okay

Once breastfeeding is well established, introducing a pacifier is not a problem.

A note on where I speak from

Because of the tongue tie, we ended up exclusively pumping. So this is what I learned from the nurses, the classes, and our own early attempts. I keep it here because it's the foundation everything else builds on.