Dear Past Tom,

You're currently sitting on the edge of a plastic-covered mattress in the maternity ward of St Thomas' Hospital, staring at a screaming, red-faced potato named Alice, while her twin sister, Lucy, is somehow already escaping the blanket you just spent ten minutes intricately folding. You're holding a giant square of organic muslin, sweating profusely, and wondering if it's too late to ask the midwives to just keep them until they're old enough for a proper duvet. (Page 47 of the hospital's complimentary sleep guide suggests you "project a calming aura," which is quite difficult when you're covered in somebody else's sick and wearing mismatched socks.)

I'm writing to you from two and a half years in the future to tell you that it does get better, but you're going to have to let go of the idea that you'll ever master the traditional blanket wrap. You're going to switch to those foolproof sleep sacks with the zips and the velcro wings within the fortnight. It's funny how, when a terrified new parent swaddles baby number one, they treat the fabric like a delicate surgical instrument, carefully measuring angles and tucking corners. By the time you get to baby number two—approximately four minutes later in our case—you just sort of roll them up like a damp burrito and hope for the best.

The terrifying milestone of the first roll

Right now, your biggest fear is that they'll never sleep. In about eight weeks, your biggest fear will be that they're going to try and sleep on their faces. The brisk NHS health visitor is going to drop by the flat and casually mention that the absolute second either of them shows a hint of trying to roll over, the wrapping party is over.

She will explain, looking over her glasses at the chaotic state of your living room, that if a baby is pinned up tight in a blanket and manages to flip onto their tummy, they can't use their arms to push their face away from the mattress. She won't actually use the acronym SIDS, but the heavy silence she leaves hanging in the air makes it abundantly clear that back-to-sleep is the only option, and rolling over while trapped in fabric is a genuinely dangerous combination.

Alice is going to show signs of rolling at exactly two months old, purely to spite you just as you've finally gotten her sleeping in three-hour stretches. When this happens, you've to transition immediately to an arms-out sleeping arrangement, which will result in three days of her violently waking herself up by punching her own nose with her newly freed hands.

Temperature paranoia and the nape of the neck

You're about to become unhealthily obsessed with TOG ratings, a metric I still don't fully understand but basically dictates how thick a blanket is. The health visitor will tell you the room should be around 22 degrees Celsius. You live in a Victorian London flat with drafty windows and radiators that possess their own malevolent sentience, so controlling the climate is a pipe dream.

Temperature paranoia and the nape of the neck — The midnight origami crisis: A letter to my past swaddling self

Because overheating is another massive risk factor that keeps parents awake at night, you'll spend hours nervously sliding a cold hand down the back of their necks to check if they're too warm, subsequently waking them up and ruining whatever fragile peace you just achieved. You can't check their hands or feet to see if they're cold, because newborn extremities are always freezing, making them feel like tiny White Walkers regardless of the actual room temperature.

The only thing that actually helps with the temperature panic is a decent base layer. I genuinely think the Sleeveless Organic Cotton Baby Bodysuit. It became our default uniform under the sleep sacks because organic cotton actually breathes, unlike the synthetic stuff that leaves them waking up clammy and furious. It has a bit of elastane so it stretches when you're trying to wedge a flailing limb into it at 4 AM, and the lack of sleeves means you aren't adding unnecessary bulk around their shoulders when you wrap them up.

Frog legs and the hip dysplasia panic

Our GP is going to casually bring up Developmental Dysplasia of the Hip during a routine check-up, using the same mild tone someone might use to tell you the post has arrived. She will explain that wrapping a newborn's legs straight down like a rigid little cigar can basically pop their hips right out of the sockets.

The bottom half of the fabric must always be loose enough for their legs to flop open into an undignified, wide-kneed frog posture. Apparently, restricting their ability to bend their knees outward is terrible for joint development. I spent the next three weeks obsessively poking at the bottom of their sacks to make certain they had room to kick, utterly convinced I was going to ruin their ability to walk before they had even opened their eyes properly.

You will read heated internet debates about whether to pin their arms down tightly to their sides to stop the startle reflex or leave their hands up by their face so they can self-soothe, but honestly, this is a personal choice that I simply don't have the energy to care about.

The truth about your laundry pile

You currently own three nice muslin cloths that someone bought you off a registry. This is a joke. You need at least eight proper sleep sacks or wraps, because Alice is going to discover a talent for explosive spit-up that defies the laws of physics, and Lucy will just leak out of her nappy every time you achieve a perfect, snug fold.

The truth about your laundry pile — The midnight origami crisis: A letter to my past swaddling self

You will also read about the "two-finger test" on some exhausted internet deep-dive. The premise is that you should be able to comfortably slide two fingers between the fabric and your baby's chest to make sure it isn't restricting their breathing. I spent hours poking my fingers down the front of their pajamas in the dark, mostly just annoying them and stretching out the fabric until they managed to free an arm anyway.

Oh, and a well-meaning relative is going to buy you one of those weighted sleep sacks because they saw an advert claiming the heavy pressure mimics a mother's touch. Don't put it on the girls. The pediatrician practically swatted a weighted blanket out of my hands during a visit, explaining that putting literal weights on a newborn's developing chest and lungs is a phenomenally bad idea, regardless of what the Instagram influencers are peddling.

If you need to stock up on base layers that seriously survive the relentless washing machine cycle without turning to sandpaper, have a look through Kianao's organic clothing collection to save yourself a trip to the high street.

Daylight hours and plastic-free distractions

When they aren't wrapped up and sleeping (which feels like never, but also constantly), you'll need somewhere to put them down so you can drink a cup of coffee that hasn't gone entirely cold.

People will buy you plastic monstrosities that flash neon lights and play tinny, aggressive melodies. Avoid them. We eventually got the Rainbow Wooden Baby Gym, and it genuinely bought me enough quiet time to boil the kettle. It isn't loud, it doesn't require batteries, and watching Lucy slowly figure out how to bat at the wooden elephant without hitting herself in the face was a genuine highlight of my week.

A few months later, the teething will start, and you'll buy things in a state of pure desperation. I bought the Violet Bubble Tea Teether thinking the design was brilliant. Honestly, it's just okay. The little boba pearls are supposedly great for reaching molars later on, but at four months old, Alice just stared at it like I'd handed her a tax return. Lucy occasionally chewed on the straw part. It's perfectly safe, food-grade silicone, but don't expect it to magically stop the crying when the Calpol wears off.

You're going to be fine, Tom. You will smell faintly of sour milk for the next six months, and you'll forget what a full night of sleep feels like, but you'll survive the great muslin wars. Just remember to always put them on their backs.

Before you dive headfirst into the midnight nappy changes, take a moment to explore Kianao's full range of sustainable baby clothing and wooden toys—because finding gear that doesn't fall apart after two washes is a rare and beautiful thing.

Questions I honestly googled at four in the morning

How tight is too tight when wrapping them up?

If you feel like you're strapping them onto a medieval rack, it's too tight. I always used the two-finger rule—if I couldn't easily slide two of my fingers down the top of the fabric near their chest, I loosened it. You want it snug enough to stop them startling themselves awake, but they still need to, you know, inflate their lungs.

What happens if she rolls over in her sleep sack?

Panic. Just kidding, but seriously, this is the main reason you've to stop wrapping their arms the second they show signs of rolling. If they flip onto their stomach and their arms are pinned inside the fabric, they can't push their face up off the mattress to breathe. As soon as Alice started throwing her weight to one side, we moved straight to the arms-out sleeping bags.

Are those heavy, weighted sleep sacks worth the money?

Absolutely not, and they're honestly dangerous. I almost used one until our doctor told me that putting extra weight on a tiny infant's chest can restrict their breathing. Stick to regular, lightweight layers and ignore the clever marketing.

Do I've to do this for every single nap?

I tried skipping it for daytime naps to save myself the hassle, and Lucy immediately punched herself in the eye and woke up screaming. The Moro reflex (that jerky startle thing they do) doesn't care if the sun is shining. If you want them to sleep for more than twenty minutes, wrap them up for naps too.

How many of these blanket things do I really need to buy?

If you've one baby, get at least five or six. If you've twins, buy a dozen and accept your fate. Between the spit-up, the nappy leaks, and the fact that you'll be too tired to run the washing machine some days, you need a massive buffer of clean ones just to survive the week.