Owen was three weeks old when I typed “is it okay to stop breastfeeding” into Google at 2 AM. My wife was in the other room, exhausted and crying. The baby was crying. I was — not crying, but close. Breastfeeding wasn’t going well. It was painful, frustrating, and making everyone in the house miserable. But every source we’d read said it was essential. “Breast is best” wasn’t just a slogan — it felt like a verdict.
So there I was, in the dark, scrolling through forums where strangers passed judgment on decisions they knew nothing about, looking for someone — anyone — who would tell us it was okay to make a different choice.
I wish I’d had Cribsheet by Emily Oster that night. It would have saved us weeks of guilt.
The Sequel You Need More Than the Original
If Expecting Better is Oster’s guide to pregnancy, Cribsheet is her guide to everything that comes after — and honestly, the “after” is where the real chaos lives. Pregnancy has rules, even if many of them are wrong. But once the baby is here, the rules multiply, contradict each other, and come with a side of moral judgment that nobody warned you about.
Breastfeeding vs. formula. Sleep training vs. attachment parenting. Screen time: how much, when, does it matter. Daycare vs. staying home. Discipline approaches. Language development strategies. Every single one of these topics has people who will tell you — with absolute certainty — that you’re doing it wrong.
Oster’s response: let’s look at the data.
The Breastfeeding Chapter Changed Everything
I’ll be direct about this because Oster is. The oft-cited benefits of breastfeeding — higher IQ, fewer infections, lower obesity rates — are based on research that largely fails to control for the most obvious confounding variable: the kind of families that breastfeed tend to be wealthier, more educated, and have better access to healthcare. When you account for that, the measured benefits shrink dramatically.
That’s not an argument against breastfeeding. If it works for your family, great. But it is an argument against the guilt-industrial complex that makes parents who can’t breastfeed — or choose not to — feel like they’ve failed their child. The evidence doesn’t support that guilt. It just doesn’t.
Reading that chapter felt like setting down a weight I didn’t know I was carrying. We’d been torturing ourselves over a decision where the actual difference in outcomes was far smaller than anyone had told us.
Sleep Training: The Evidence Is Clear
The other topic where Oster saved my sanity: sleep training. We’d heard from multiple sources that letting a baby cry — even in a controlled, gradual way — was psychologically damaging. That it would harm attachment. That our baby would grow up with trust issues.
Oster looked at the longitudinal studies. Multiple well-designed trials. Follow-ups years later. The finding: no evidence of long-term harm from sleep training. None. Kids who were sleep-trained had the same attachment, the same behavioral outcomes, the same everything as kids who weren’t. The only measurable difference? Their parents were less depressed. Because they were sleeping.
We sleep-trained Owen at four months. He’s fine. He’s more than fine — he’s a happy, securely attached fourteen-month-old who sleeps twelve hours a night. And my wife and I are functional humans again instead of zombies snapping at each other over whose turn it is to get up.
Decisions Are Tradeoffs, Not Moral Tests
That’s the throughline of Cribsheet, and it’s the most liberating idea in the book: parenting decisions are not moral tests. They’re tradeoffs. Every choice has costs and benefits, and the right answer depends on your family, your circumstances, and your values — not on what a stranger on the internet thinks.
Going back to work vs. staying home? Oster looks at the research on both and finds that kids do fine either way — but the parent’s mental health matters a lot. So the question isn’t “what’s best for the baby” in some abstract, universal sense. It’s “what arrangement lets everyone in this family function at their best?”
That reframing was huge for us. We stopped asking “are we doing this right?” and started asking “does this work for our family?” The answers got a lot clearer.
The Book That Eliminated the Guilt
I keep a running list of things I’ve felt guilty about as a parent. It’s long. Did we start solids too early? Too late? Is that too much screen time? Should I be doing more tummy time? Am I talking to him enough? Am I hovering too much?
Oster doesn’t make the guilt disappear entirely — I’m not sure anything can — but she shrinks it to its actual size. When you know the real evidence, the gap between “this choice might end the world” and “this choice is basically fine” becomes obvious. Most of the things we agonize over are basically fine.
If Expecting Better is the book for pregnancy, Cribsheet is the book for the first two years. I’d recommend reading it before the baby comes, when you have the capacity to absorb it. You won’t have that luxury once you’re in the trenches.
This post is part of a series on the four books that helped me most as a first-time dad. Next up: The Happiest Baby on the Block by Dr. Harvey Karp — the book that gave me an actual toolkit for 3 AM.
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