Eleven months is one month from the first birthday and one of the most action-packed developmental moments of the entire year. Walking is on the horizon. First true words are arriving — intentional sounds attached to specific meanings.
And there's a hard deadline this month that most parents don't know about until it's passed.
The Peanut Window — It Closes at 11 Months
The 2015 LEAP study showed that introducing peanuts between 4 and 11 months reduces the risk of peanut allergy by up to 80%. That window closes this month.
If your baby has not yet been regularly offered peanut products, act this week.
Mix 1/4 teaspoon of smooth peanut butter into a puree or yogurt. Offer a small amount on a spoon. Wait 20 minutes. Watch for hives, swelling, vomiting, or difficulty breathing. If no reaction, offer peanut products at least three times per week going forward to maintain tolerance.
After 11 months, the protective window closes. Introduction after this point can still happen, but it doesn't carry the same preventive benefit. The LEAP research is clear on this.
Motor Milestones at 11 Months
- Cruising — well established — Walking sideways along furniture with growing confidence. Some babies are now letting go briefly and standing without support for a second or two.
- Standing without support — beginning — Letting go of furniture and standing for several seconds. First independent steps may come any day.
- Walking push toys — If you haven't introduced a walk-behind push toy, now is the right time. It builds the balance and confidence needed to let go and take independent steps.
- Self-feeding — broad — A variety of soft finger foods at every meal. If your 11-month-old is not eating finger foods yet, start with very soft puffs or small banana pieces this week.
Not walking yet at 11 months — this is normal. The CDC updated their guidance in 2022: the expected milestone for independent walking is now 15 months, not 12 months. Most babies take first steps between 10 and 15 months. At 11 months, cruising and standing with support is exactly where the majority of babies are.
Language Milestones at 11 Months
First Words — Arriving
First true words typically appear between 11 and 14 months. At 11 months, you may be seeing the earliest signs: a consistent sound attached to a specific person or object. "Ba" for ball. "Mo" for more. A sign for milk. These count — even if the pronunciation isn't perfect.
The milestone is consistent, intentional use of a sound or sign to mean something specific. Not adult-quality speech. If you're hearing consistent sounds attached to specific things, those are first words even if you're not sure they "count." They do.
Pointing — Should Be Present
Declarative pointing — pointing to share interest, then looking back at you to check your reaction — should be emerging by 11–12 months. If you're not seeing any pointing or joint attention yet, raise it specifically at the 12-month visit. It's a primary early screening item for autism spectrum disorder.
Understanding More Than They Say
Receptive language (understanding) runs about two months ahead of expressive language (speaking). Your 11-month-old likely understands "no," their name, the names of a few familiar people and objects, and simple instructions — even if they can't say these words yet.
Point and name things constantly. You're building the receptive vocabulary that expressive language will emerge from. The words they understand now are the words that come out in a few months.
What to Do Right Now
- Introduce peanuts this week if you haven't. Mix 1/4 teaspoon of smooth peanut butter into a puree or yogurt. Wait 20 minutes after the first taste. Watch for reactions. If none, offer three times per week going forward. This is the last week of the LEAP study's protective window.
- Start a walk-behind push toy. If your baby is cruising but not yet taking independent steps, a push toy gives them the stability to practice balance while upright. It shortens the gap to independent walking.
- Track first words. Write down every consistent sound or sign your baby uses with a specific meaning. "Ba" for ball counts. A sign for more counts. You'll need this list for the 12-month visit — and building it now keeps you honest about what they're actually doing versus what you're hoping they're doing.
The 12-month well-child visit is a major checkpoint. You'll want to walk in prepared.
Scout tracks what's opening month by month
Every month, on your child's monthly birthday, Scout sends an email timed to their exact developmental age — what windows are open, what's closing, and exactly what to do. Plus a calendar invite so nothing slips.
Try Scout Free →Frequently Asked Questions
What milestones should an 11-month-old be hitting?
Cruising furniture, beginning to stand without support, self-feeding varied finger foods, cup use at meals, using mama/dada with beginning meaning, first words or proto-words emerging, pointing to share interest, waving. Peanut introduction window closes at 11 months — act this week if it hasn't happened.
When do babies say their first words?
First words typically appear between 11 and 14 months. A first word is any consistent, intentional sound or sign attached to a specific meaning — pronunciation doesn't have to be perfect and sign language counts. Not having any first words by 15 months is a flag worth raising with your pediatrician.
Is it normal for an 11-month-old to not be walking yet?
Completely normal. The CDC's updated 2022 guidance sets the expected milestone for independent walking at 15 months. Most babies take first steps between 10 and 15 months. At 11 months, cruising and standing with support is exactly where most babies are.
What is the peanut introduction window and when does it close?
The LEAP study (2015) showed introducing peanuts between 4 and 11 months reduces peanut allergy risk by up to 80%. The window closes at 11 months. If peanuts haven't been introduced yet, do it this week: mix a small amount of smooth peanut butter into a puree, offer a small amount, wait 20 minutes, watch for reactions. If no reaction, offer three times per week to maintain tolerance.