My son is 9 months old. He cannot sit up by himself when lying down, nor can he lie down from sitting. He cannot crawl, and didn't even show any intention to move his body. If he can't reach what he wants, he will turn to an adult for help. If the adult refuses to help, he will cry and then give up. Doesn't even try to get it by himself.

Our doctor said that we need to train him to crawl and let him to do more exercise, but he is very lazy. If I let him lie on his tummy, he will roll over and lie on his back very soon. What can I do to train him to crawl?

  • 1
    What have you done so far to increase his strength and encourage moving? I am thinking about holding him just by his sides, placing him under a plaything with dangling toys, giving him tummy time… in short, how much of his time does he spend on his back or in a stroller, car seat, carrier, …
    – Stephie
    Sep 16, 2021 at 15:21
  • And as you talked to your pediatrician: Did he exclude any issues that could cause delays in development, in other words, is your baby healthy and just untrained (or “lazy” as you put it)?
    – Stephie
    Sep 16, 2021 at 15:51
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    Hello,Stephie: the pediatrician did not mention any health issues of my baby. He looks healthy and smart. Only the gross motor skills are lagging, other skills such as fine motor and speech are good.
    – buck
    Sep 16, 2021 at 17:25
  • He spends most of his time on his back or sit. If I put him on tammy, he will roll over. I tried to attract his attention with different objects, build him a slope and encourage him to crawl down, dangling him up with a towel and put him into a crawling position, personally demostrate to him, and also bought him a crawling toy baby to teach him. He doesn't seem to understand what I want him to do.
    – buck
    Sep 16, 2021 at 17:33
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    Crawling down is not feasible, as their legs are much stronger than their arms, and their weight would be behind them. They likely would not even try it. It's not laziness, it's physics., once he can crawl. Crawling up would be more likely to succeed. Also, you say he has good fine motor skills. If he doesn't like toys, what does he do besides feed himself? Then tempt him with food! Sep 18, 2021 at 3:41

2 Answers 2


Let me preface my answer with a few general remarks about child development and stages:

First, not all babies reach the various milestones at exactly the same time. In fact, most milestones have a rather large bracket of what’s “normal”, for crawling numbers are usually between six and twelve months. In short, your baby may be simply on the late side of the Gaussian curve. Only if a baby is missing multiple developmental milestones should you be seriously worried.

Second, not all babies crawl before they start walking. Some start just pulling themselves up and go straight to walking. Others roll, scoot or wriggle around to propel themselves to another place. While a few years (or rather decades) ago pediatricians believed non-crawling to be a warning sign, this is no longer the case - at least not unless other issues are observed, see paragraph above.

In order to learn to crawl, turn, sit and walk, a baby needs strong core muscles and some babies will quite eagerly do something like “baby sit-ups” or “baby leg lifts”. Others less so. But there are ways to encourage them to “exercise” and the nice bit is that at least some will give you a bit of a workout as well.

The most basic thing is “tummy time”, which we usually start early on with small babies. For babies that dislike it (some don't have the patience and complain quickly), a good alternative is to place them on your lap or over one thigh, or even over your shoulder, because then you avoid the face-flat-on-the-floor effect. From PEKIP I learned the following exercise: Put baby high up on your shoulder, so that he's basically balancing just with some support. Turn your back towards a mirror. That's often exciting enough to have them engaging with their own mirror image, training their muscles at the same time. A few minutes a couple of times a day will already acchieve a lot.

For some babies, placing them under one of these baby trapeezes with dangling objects can motivate them a lot - and note than you can add your own items and adjust the height so that they are within babys reach. One of mine enjoyed pulling a thin silk cloth from the trapeeze and over himself. Caveat: Always supervise this kind of play.

When playing with your baby, be as active as possible, e.g. hold them safely by the rump / rib cage and lift them high up, in an "airplane position". Bonus points for making silly noises and funny faces. At nine months, I often held mine with one arm, diapered bottom on my hip, facing away from me. The general idea is to hold them as loosely as possible while still being safe - that means the baby will contribute inadvertently to stabilizing himself. And yes, I bet your baby is getting heavy by now, I did promise you a bit of a workout ;-)

Once your baby has developed his core muscles a bit, there will be way less fussing when you place him in "tummy time" and he will find it easier to try to grab items within or slightly outside his reach. It's your job to find the kind of items (note that I didn't specify "toy") that tempt him. For one of mine it was a "rattle bottle", a plastic water bottle filled with various random small items that made some noise or were interestin to look at - contents could be switched occasionally. The other was a total plush toy fan.

Note that at that age, showing him the motions of crawling, either by yourself or a toy won't work. Mimicking another human's behaviour will come later. Learning works differently at that stage. And crawling comes in stages, as described below.

As a general rule, he needs to learn how to move his body first. Try to give him as much occasion to move as freely as possible (e.g. on a big blanket on the floor instead of sitting in your lap), you can always keep him company if you like and sit on the floor yourself. Either when you are playing with him or simply keeping him company. There are a lot of tasks that can be done sitting on the floor instead of sitting on a table, be creative. You may be surprised how interesting for example a pile of laundry can be that gets folded next to baby - let him “participate”, even if it means that the freshly laundered sock gets chewed and drooled upon and goes right back into the wash instead of the drawer.

And don't worry, all babies go through the stage where they turn in one direction and can't get back. That's perfectly normal (and enervating from an adults' perspective). I would also discourage you from putting him in positions he can't reach by himself (e.g. letting him sit too much). This is based on multiple recommendations we were given by pediatricians and other professionals. Crawling usually starts with a few very weird movements, including pushing up his head and shoulders, pushing the rear high up in the air, generally weaving back and forth, and at some point most babies will end up going backwards when they try to get foreward. Expect frustrated wailing. That's perfectly normal and failure helps them to learn.

Be patient, give him plenty of chances and encouragement to move and if there's no improvement, bring it up with your pediatrician again.

But I had to smile when I read this:

If he can't reach what he wants, he will turn to an adult for help.

I occasionally tell the anecdote that in order to get something, one of my kids learned to walk and the other learned to talk.
Which is both fine per se, if it doesn’t impede their overall development.

  • Thank you for such a detailed answer! It is very helpful. I learned a lot from it. I will implement some of the methods to train my son.
    – buck
    Nov 7, 2021 at 14:38

This web page has some good ideas for encouraging your child to crawl.

Putting a favourite toy just out of reach in front of them or in a half circle around them is a good way of motivating them to move and reach.

Don't be afraid to go back to your doctor in a couple of months if things don't improve. If you don't think your doctor is treating you seriously, get a second opinion.

  • 1
    He is not very interested in toys. His favorite is pulling my hair. I tried with my hair, it was painful. :)
    – buck
    Sep 16, 2021 at 17:46
  • I know this is late and hopefully, things have improved by now, but have you tried placing food or treats a few inches in front of him? Also a flashing light or sound-producing toy might stimulate him. Help him by moving the correct limbs and that might jumpstart his interest in moving closer to the object.
    – suse
    Oct 3, 2021 at 4:33
  • Things have improved a little bit. Now he shows more interest in toys and the intention to move. He learned to crawl backwards.
    – buck
    Nov 7, 2021 at 14:44

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