Health Guides
Tongue Tie in Babies: Signs, Diagnosis, Treatment & Breastfeeding Recovery
Jeehoo Jeon·10 min read
Jeehoo Jeon
Jeehoo is a maternal health researcher and content writer at Onzenna. She approaches every topic the same way: dig into the evidence, cut through the noise, and tell you what actually matters. Her writing is calm, informed, and built for the mom who wants the real answer — not an opinion dressed up as a fact.
86 articles
Sleep Guides
4 Month Sleep Regression: Why It Happens and How to Get Through It
The 4 month sleep regression marks a permanent shift in your baby’s sleep architecture as their brai
Jeehoo Jeon·9 min read
Sleep Guides
9 Month Sleep Regression Signs: What’s Happening and How to Get Through It
A 9 month sleep regression isn’t a setback—it’s your baby’s brain working through major developmenta
Jeehoo Jeon·11 min read
Baby: 3–12 Months
7 Month Old Milestones: Crawling, Development & What’s Actually Normal
7 month old milestones got you Googling at midnight? Here’s your no-panic guide to what’s actually n
Jeehoo Jeon·8 min read
Sleep Guides
18 Month Sleep Regression: Why Your Toddler Stopped Sleeping & What Actually Works
The 18 month sleep regression toddler stage isn’t a parenting failure — it’s a sign your child’s bra
Jeehoo Jeon·10 min read
Baby: 3–12 Months
8 Month Old Milestones: Food, Sleep & Development (No Fluff, Just Facts)
Navigating 8 month old milestones and wondering if your baby is on track? From development and feedi
Jeehoo Jeon·8 min read
Baby: 3–12 Months
12 Month Old Milestones: Walking, Talking & What to Actually Expect
Your baby is turning one and the 12 month old milestones era is equal parts incredible and chaotic.
Jeehoo Jeon·8 min read
Child Development
15 Month Old Milestones: What Your Toddler Should Be Doing (and When to Worry)
At 15 months, development spreads across a wide range—from walking and language to fine motor and so
Jeehoo Jeon·12 min read
Baby: 3–12 Months
Baby Teething: Signs, Timeline, and How to Help
The signs of teething can appear weeks before an actual tooth breaks through, including increased dr
Jeehoo Jeon·13 min read
Baby Names
Unique Baby Girl Names for 2026: Rare, Beautiful Options Beyond the Top 100
The shift toward unique baby girl names reflects a documented trend: parents are moving away from ov
Jeehoo Jeon·13 min read
Baby Names
The Best Unisex Baby Names: Gender-Neutral Options That Actually Work
Unisex baby names are reshaping how modern parents approach naming. This guide covers timeless class
Jeehoo Jeon·14 min read
Baby Names
Japanese Baby Names: Beautiful Names with Deep Meaning for Boys and Girls
Japanese baby names carry intentional meaning built from kanji characters, where each symbol holds i
Jeehoo Jeon·15 min read
Baby Names
French Baby Names: Elegant Options for Boys and Girls That Stand the Test of Time
French baby names carry centuries of history and cross-cultural appeal, from Théodore and Marguerite
Jeehoo Jeon·12 min read
Baby Names
Spanish Baby Names: Beautiful, Meaningful Options for Boys and Girls
Spanish baby names carry phonetic clarity, cultural depth, and centuries of meaningful history. This
Jeehoo Jeon·12 min read
Baby Names
Hawaiian Baby Names: Beautiful Island Names with Deep Meaning
Hawaiian baby names carry power and meaning rooted in nature, mythology, and ancestry. Learn the mos
Jeehoo Jeon·11 min read
Baby Names
Vintage Baby Names Making a Comeback in 2026: The Names Your Grandma Would Love
Vintage baby names are having a real moment — but not because of nostalgia alone. Parents are choosi
Jeehoo Jeon·11 min read
Baby Names
Rare Baby Names You Haven’t Heard Yet (But Will Love)
Rare baby names are becoming the new normal among younger parents who prioritize cultural identity a
Jeehoo Jeon·13 min read
Health Guides
Baby Eczema Flare-Up Triggers: The Complete Guide to Avoiding Common Irritants
Baby eczema flare-ups aren’t random—they’re triggered by predictable irritants hiding in your home.
Jeehoo Jeon·11 min read
Health Guides
Baby Dry Skin in Winter: Why It Happens and How to Fix It
Baby dry skin in winter happens because your infant’s skin barrier is still developing and the combi
Jeehoo Jeon·10 min read
Health Guides
Best Baby Lotion for Sensitive Skin: What Dermatologists Actually Recommend
Baby skin is structurally different from adult skin — thinner, more porous, and prone to water loss
Jeehoo Jeon·11 min read
Health Guides
Pink Eye in Babies: How to Spot It, What Causes It, and When to Treat It
Pink eye in babies can be caused by bacteria, viruses, or blocked tear ducts—each requiring differen
Jeehoo Jeon·12 min read
Baby Safety
Flying with a Toddler: Airplane Activities and Survival Tips (Tested by Real Parents)
Flying with a toddler feels impossible until you understand why airplane cabins are challenging for
Jeehoo Jeon·12 min read
Activities & Play
Road Trip with Toddler: Tips, Activities & Packing Strategy That Actually Works
A road trip with toddler tips isn’t about entertainment hacks—it’s about timing naps, realistic pack
Jeehoo Jeon·11 min read
Sleep Guides
Baby Jet Lag: A Parent’s Guide to Adjusting Sleep Schedules After Travel
Baby jet lag disrupts your infant’s developing circadian rhythm when crossing time zones, causing sl
Jeehoo Jeon·12 min read