This month your baby has an official checklist. The CDC publishes milestone lists for specific ages, defined as things most babies, 75 percent or more, can do by that age. By 9 months, most babies get to a sitting position by themselves, sit without support, move things from one hand to the other, and use their fingers to rake food toward themselves. [1] That rake is worth watching. It is the rough draft of the pincer grasp, the tidy thumb and pointer finger pickup that the CDC lists as a milestone by the first birthday, not this month. [3]
Movement styles are all over the map right now, and that is fine. The AAP describes crawling as a skill usually mastered between 7 and 10 months, so a 9 month old still working on it is inside the normal window. Some babies scoot on their bottoms or slither on their stomachs, and a few never crawl at all. The AAP standard is simple: as long as your baby coordinates each side of the body and uses each arm and leg equally, there is no cause for concern. [2] Crawling does not even appear on the CDC checklists. [1]
Pulling to stand often starts around now. The AAP notes that once the urge arrives, babies pull themselves to standing every chance they get, and at first they may not know how to get back down. If yours cries for help, show them how to bend their knees and lower themselves instead of lifting them down each time. [2] Once standing feels secure, cruising follows: tentative steps while holding on to furniture. Check that anything your baby uses for support has no sharp edges and is properly weighted or attached to the floor. [2] If none of this has started, no clock is ticking. The CDC places pulling up to stand and walking while holding on to furniture on the list for the first birthday. [3] First steps, when they eventually come, will be shaky, often a single step before a plop. That is how everyone starts. [2]
Language is getting louder. By 9 months, most babies make long strings of sounds like "mamamama" and "bababababa", and lift their arms to be picked up. [1] Real words sit on a famously wide range. The AAP notes a tremendous variance in when children begin to say recognizable words: some have two or three words by their first birthday, while for many, speech at 12 months is expressive gibberish with the tones and rhythm of real sentences. Your baby may stumble onto "mama" by accident this month and then, seeing your reaction, start using it to summon you. [4]
The biggest shift this month may be emotional. Around this age babies discover that objects still exist when hidden: the CDC checklist includes looking for a toy dropped out of sight, banging two things together, and laughing at peekaboo. [1] The same discovery has a flip side. Your baby now knows there is only one of you, and that you still exist somewhere when you walk away. The result is separation anxiety: clinginess, protest when you leave, wariness around strangers. The AAP notes it usually peaks between 10 and 18 months, then fades. It is a sign of attachment, not a problem to fix, and not a verdict on your parenting. [5]
The CDC lists 12 to 16 hours of sleep per 24 hours for infants 4 to 12 months, naps included. Babies vary, so count the whole day rather than judging the night alone. [6]
Separation anxiety works nights too. The AAP notes that a baby in this phase may wake in the middle of the night searching for you. A baby who cries the moment you step out of the room is working through a normal stage of development, not manipulating you. [5]
Two practical notes. First, safe sleep rules run to the first birthday: a firm, flat sleep surface, with soft objects and loose bedding kept out of the sleep area, because pillows, quilts and comforters raise the risk of suffocation. [7] Second, a baby who has just learned to pull to stand will do it in the crib and may end up stuck upright, crying. Practicing the sit back down move during the day saves night trips. [2]
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Open the week calculatorNine months is when meals officially step up. WHO guidance moves from 2 to 3 meals of solid foods per day at 6 to 8 months to 3 to 4 meals per day from 9 months, with 1 to 2 snacks as needed. [8] Texture can step up too: the AAP suggests introducing foods slightly coarser than strained purees from around 8 months, since they encourage chewing practice. [9]
Breast milk or formula remains the main drink, and both work. The AAP sample menu for 8 to 12 month olds is built around roughly 24 ounces (720 mL) of breast milk or formula a day, with solid food portions of about 2 to 4 ounces. [9] For families who breastfeed, WHO supports continuing up to 2 years of age or beyond. [8] Plain water is fine in small amounts: about 4 to 8 ounces a day at 6 to 12 months. Cow's milk as a drink waits until 12 months, and the AAP states that infants under 1 year should not drink juice at all. Eating fruit always beats drinking it. [10]
Finger foods and that new raking grip make mealtime the best fine motor practice there is. One rule keeps it safe: keep pieces soft and small. The AAP advises that round, firm foods like hot dogs and grapes are served only if chopped completely into tiny pieces, and that whole grapes, nuts and seeds, popcorn, raw carrot sticks and thick spreads of nut butter stay off the tray at this age. [11]
A 9 month old's reach grows by the week, so this checklist is really one habit: get low, look around, and move what you find.
Most of what a 9 month old throws at you is ordinary. A short list of signs deserves a call, so you never have to wonder.
Fever above 104 F (40 C) repeatedly, at any age: call your child's doctor. [14]
Fever lasting more than 24 hours in a child younger than 2 years: call, even if no other symptoms show. [14]
Fever with a seizure, or a child who still acts sick once the fever comes down: call right away. [14]
Fewer than six wet diapers in a day, a parched dry mouth, fewer tears when crying, or a sunken soft spot: the AAP lists these as signs of dehydration and advises notifying the pediatrician immediately. [15]
Your baby uses one side of the body much more than the other, or does not use each arm and each leg equally: bring it up with your doctor. [2]
Your baby is not sitting without support, is missing several items on the 9 month checklist, or has lost a skill they once had: share that with your doctor and ask about developmental screening. Acting early helps, and most of the time the answer is reassurance. [1]
LEELALU is education, not medical care. Nothing here is a diagnosis. For anything on this list, or any symptom that worries you, contact your provider. If it feels like an emergency, call 911.
The CDC list for the first birthday reads like a preview of the next three months: pulling up to stand, walking while holding on to furniture, picking things up between thumb and pointer finger, waving bye-bye, calling a parent "mama" or "dada", and drinking from a cup without a lid as you hold it. [3] Every one of those is being rehearsed on your floor right now.
Expect goodbyes to get harder before they get easier. Separation anxiety usually peaks between 10 and 18 months, then fades during the second half of the second year. The clingy stretch ahead is the expected shape of things. [5]
Yes. The CDC lists pulling up to stand and walking while holding on to furniture as milestones most babies reach by their first birthday, not by 9 months. The AAP describes pulling up and cruising as skills that develop across the 8 to 12 month window. A 9 month old who sits well and is finding some way to move around is on schedule. If your baby is not sitting without support, or you feel your baby is not moving normally, bring it up with your pediatrician. [3] [2]
The CDC lists 12 to 16 hours per 24 hours for infants 4 to 12 months, naps included. Babies vary, so count the whole day rather than the night alone. [6]
WHO guidance is 3 to 4 meals of solid foods per day from 9 months, with 1 to 2 snacks as needed. Breast milk or formula is still the main drink: the AAP sample menu for 8 to 12 month olds is built around roughly 24 ounces (720 mL) a day. [8] [9]
LEELALU is education, not medicine. This page cannot diagnose or treat anything, and it never replaces your clinician. For anything on the "call your doctor" list, or anything that worries you, contact your provider. Found an error? Write to hello@leelalu.com and a person will read it. Our method: Editorial Standards.