If your baby just started pulling to stand in the crib, you're in good company, and it's rarely a cause for worry. It usually signals a healthy motor milestone, not a problem. The three moves that matter right now: lower the crib mattress, clear out anything loose or soft, and check the hardware. Do those three things tonight, respond calmly and consistently at bedtime, and most families see steadier sleep return within a matter of weeks.
TL;DR:
- Lower the crib mattress to its lowest setting immediately after your baby starts pulling up to prevent falls.
- Remove all loose bedding, toys, and bumpers to reduce suffocation and climbing hazards as your baby becomes more active.
- Check slat spacing and hardware regularly to prevent entrapment and structural failure once your baby is standing.
- Practice daytime sitting and standing transitions with toys to help your baby learn to lower themselves and shorten the standing phase.
- Respond with brief, calming checks at night to avoid reinforcing standing behavior as a sleep strategy unless your baby shows signs of distress.
Table of Contents
- Why Babies Stand in the Crib at This Age
- Crib Safety Checklist: What to Change Right Now
- How to Respond at Night Without Reinforcing the Behavior
- Daytime Practice That Speeds Up Nighttime Mastery
- When to Move to a Toddler Bed or Call the Pediatrician
- Five-Minute Bedtime Safety Checklist
- A Different Way to Look at This Phase
- Get Stage-Specific Help for the 8 to 10 Month Window
- Where to Learn More About Crib Safety
- Sources
Why Babies Stand in the Crib at This Age
Your baby isn't trying to sabotage bedtime. Standing in the crib is often a sign that new neural pathways for balance and leg strength are firing, and the brain wants to rehearse the skill until it feels automatic. That rehearsal doesn't pause for sleep. In fact, it often gets louder right at nap time and bedtime, because that's when your baby has quiet, uninterrupted time to practice.
This typically starts somewhere between 6 and 9 months, with a lot of babies hitting peak practice mode around 8 to 10 months. Some babies pull up early and move on fast. Others linger in this stage for weeks. Both are normal, and the range of first-year motor milestones varies quite a bit from baby to baby.
A few things tend to happen during this window:
- Naps get shorter because your baby pops up to practice instead of settling back down.
- Night wakings increase, often for the same reason: the crib becomes a practice gym instead of a place to sleep.
- Your baby may seem stuck standing, not because they're upset, but because they haven't yet mastered the reverse motion of sitting back down.
That last point is the real key to shortening this phase, and we'll get to how you fix it.
Crib Safety Checklist: What to Change Right Now
Once your baby can pull to stand, the crib itself needs to be adjusted promptly for safety. The setup that was safe for a baby who mostly lies still is not safe for one who can grip the rail and push up.
A baby standing at a mattress set for a newborn faces a genuinely serious fall risk once they gain enough height to tip over the rail.
Work through this in order:
- Lower the mattress to its lowest setting the moment you notice pulling-to-stand behavior. The Cleveland Clinic recommends timing this adjustment to your baby's abilities, not to a fixed age on a chart.
- Strip the crib down to just a fitted sheet. Toys, bumpers, loose blankets, and pillows all become climbing aids or suffocation hazards once your baby is upright and mobile.
- Check crib hardware for looseness or damage. Loose screws, cracked slats, or gaps between the mattress and frame all raise the risk of entrapment, and the CPSC recommends slat spacing under 2 3/8 inches to prevent limb or head entrapment.
- Move furniture and shelving away from the crib. A changing table, bookshelf, or mounted decor within reach gives a standing baby something new to grab or climb toward.
For sleepwear, stick with a well-fitted sleep sack or wearable blanket rather than loose bedding, and keep the crib in a room where you can hear your baby without needing to check every few minutes.
How to Respond at Night Without Reinforcing the Behavior
The instinct to rush in every time your baby pops up is understandable, and it's also usually the thing that keeps this phase going longer than it needs to. Babies are quick studies. If standing consistently earns a long visit from a parent, standing becomes a very effective strategy.
Start by learning to tell the difference between practice and distress. A baby cheerfully babbling while gripping the rail is rehearsing a skill. A baby who's genuinely upset, crying hard, or stuck in a way that seems physically distressing needs you to step in.
For the practice version, keep your response small and predictable:
- Wait a beat before going in, since many babies settle themselves back down within a minute or two.
- If you do check, use one calm, wordless motion to help your baby lie back down, then leave.
- Skip the chat, the cuddle, and the extra pat on the back. Cedars-Sinai researchers note that parents often add comfort items like extra padding during this phase, which actually raises fall and suffocation risk rather than solving anything.
- If you're already using a sleep-training method, fold this standing response into your existing check-ins rather than starting over from scratch.
Every caregiver in the house needs to run the same script. If one parent lingers and another leaves in ten seconds, your baby gets mixed signals, and the phase tends to stretch out longer.
Pro Tip: A single, neutral lowering motion during a night check, with no talking or eye contact, keeps the interaction from feeling like a reward. Save the warmth for daytime.
Daytime Practice That Speeds Up Nighttime Mastery
Here's the part most sleep advice skips: your baby usually isn't stuck standing because they're stubborn. They're stuck because they haven't yet learned the motion that gets them back down. Sitting from standing requires a controlled squat, and that's a different skill than pulling up.
You can teach it during the day in short bursts:
- Place a favorite toy on the floor of the crib or a play yard, low enough that your baby has to bend and reach for it while holding the rail.
- Repeat this reach-and-squat motion several times per session. Each repetition builds the coordination needed to lower down smoothly instead of toppling or getting stuck.
- Run a 10 to 15 minute practice window before naps and before bedtime, so the novelty of standing gets some of its shine worn off before your baby is expected to settle.
This kind of supervised transition practice speeds up nighttime mastery because the movement becomes familiar rather than a new trick to test out at 2 a.m. Fitting this practice into your existing nap and wake window schedule makes it easier to stay consistent day to day.
When to Move to a Toddler Bed or Call the Pediatrician
Most of this phase resolves with time and consistency, but a few thresholds tell you it's time to change the setup or bring in professional advice.
- Move to a toddler bed once your baby can climb out of the crib or the crib rail is too low relative to their chest or neck height.
- Give it 2 to 6 weeks. Most babies work through the standing phase within that window once mattress height and consistent responses are in place.
- Call your pediatrician if standing persists past 6 weeks with no improvement, if your baby has been injured attempting to climb out, or if you're seeing other developmental concerns alongside the sleep disruption.
- Reach out sooner if exhaustion is affecting your ability to respond safely at night. That's a legitimate reason to ask for help, not a failure on your part.
Five-Minute Bedtime Safety Checklist
Keep this near the crib for a quick check before you put your baby down tonight.
| Action | Why it matters |
|---|---|
| Lower mattress to lowest setting | Reduces fall height once baby can pull to stand, per Cleveland Clinic guidance |
| Remove toys, bumpers, pillows, loose blankets | Prevents suffocation and removes climbing aids, per CPSC crib safety tips |
| Check slat spacing and hardware | Slats over 2 3/8 inches apart raise entrapment risk |
| Use a fitted sheet only, no soft bedding | Matches AAP safe-sleep recommendations for a clear sleep surface |
| Move furniture away from crib rails | Removes climbing routes to nearby shelves or tables |
| Use one calm, brief response at night checks | Avoids reinforcing standing as a way to get attention |
A Different Way to Look at This Phase
Most advice treats standing in the crib as a sleep problem to be solved. It's more useful to treat it as a skill in progress that happens to collide with sleep. That reframe changes how you respond, and it changes how anxious you feel at 2 a.m. watching your baby bounce at the rail instead of settling.
Mellow's stage-based approach exists because regressions like this one are predictable if you know what age brings them. Parents who can see a regression coming, rather than getting blindsided by it, tend to respond with more patience and less panic, which shortens the whole ordeal. Pairing safety-first crib changes with the short daytime drills covered above, tracked against your baby's actual stage rather than a generic timeline, tends to move things along faster than waiting it out. If you want a closer look at how this phase fits into the bigger picture, our piece on baby sleep patterns and developmental milestones walks through what typically comes next.
— Mauricio Vargas
Get Stage-Specific Help for the 8 to 10 Month Window
Standing in the crib almost always lands squarely inside the 8 to 10 month stretch, and that's exactly the window Mellow built dedicated guidance around. Instead of generic sleep tips, the 8 to 10 months plan walks you through what's driving the regression, what to expect week by week, and how to adjust your routine as the standing phase runs its course.
Inside the Mellow app, you can track your baby's specific milestones, log night wakings, and get guidance that adjusts as your baby moves through this stage and into the next one. If you'd rather start with something quick, the mini guides cover crib transitions and sleep disruptions in short, practical formats. Open the Mellow app and start a trial to get a plan built around your baby's actual stage instead of a one-size-fits-all schedule.
Where to Learn More About Crib Safety
- Cleveland Clinic explains exactly when and how to adjust mattress height.
- CPSC covers slat spacing, hardware checks, and full crib safety standards.
- HealthyChildren.org (AAP) outlines safe-sleep basics, including room-sharing guidance.
- Cedars-Sinai addresses fall prevention and why added padding raises risk.
This article is general information, not a substitute for advice from a qualified doctor. Consult a qualified healthcare professional about your own circumstances before acting on anything here.
Sources
- When to lower your baby's crib mattress — Cleveland Clinic
- Crib safety tips — U.S. Consumer Product Safety Commission (CPSC)
- Crib safety: Preventing falls and injuries — Cedars-Sinai