C.,
I too don't remember seeing this post before but am glad that you decided to post it again!
Most babies learn to crawl between the ages of 6 and 10 months. So your baby is not behind schedule. Children tend to develop at their own pace. Your baby may opt for another method of locomotion around this time, though — like bottom shuffling (scooting around on his bottom, using a hand behind and a foot in front to propel himself), slithering on his stomach, or rolling across the room. Some babies skip crawling altogether and move directly to pulling up, standing, and walking. Since the "Back to Sleep" campaign was initiated in 1994, more babies seem to be crawling later or skipping it completely. (The campaign aims to reduce the risk of SIDS by encouraging parents to put babies to sleep on their back.) My oldest daughter didn't crawl at all. She went from sitting up, to pulling herself up to just walking all of a sudden one day. It totally shocked us!
Don't worry about her style; it's getting mobile that's important, no matter how your baby does it.
Your baby will gradually (over a couple of months) learn to move confidently from a sitting position to being on all fours, and she'll soon realize she can rock back and forth when her limbs are straight and her trunk is parallel to the floor.
Somewhere around 9 or 10 months, she'll figure out that pushing off with her knees gives her just the boost she needs to go mobile. As she gains proficiency, she'll learn to go from a crawling position back into a sitting position. She'll also master the advanced technique that pediatrician William Sears calls "cross-crawling" — moving one arm and the opposite leg together when she moves forward, rather than using an arm and a leg from the same side. After that, practice makes perfect. Look for her to be a really competent crawler by the time she's a year old.
After your baby has mastered crawling, the only thing between her and complete mobility is learning to walk. To that end, she'll soon begin pulling herself up on everything she can reach, whether it's the coffee table or Grandma's leg. Once she gets the feel of balancing on her legs, she'll be ready to stand on her own and cruise while holding onto furniture. Then it's just a matter of time until she's walking, running, jumping, and leaping.
The best way to encourage crawling — just as with reaching and grabbing — is to place toys and other desirable objects (even yourself) just beyond your baby's reach. The American Academy of Pediatrics also suggests using pillows, boxes, and sofa cushions to create obstacle courses for her to negotiate. This will help improve her confidence, speed, and agility. Just don't leave her alone — if she gets stuck under a pillow or box, she'll surely be frightened and may be in danger of smothering.
A crawling baby can get into a lot of mischief. Make sure your house is childproofed, with a special emphasis on stairway gates. Your baby will be drawn to stairs, but they can be dangerous, so keep them off-limits until she's really mastered crawling (usually by about 12 months). Even then, supervise her closely. For now, suggests the AAP, create a couple of practice steps with foam blocks or sturdy cardboard boxes covered in fabric.
You don't have to invest in shoes just yet. Your baby won't need to wear footwear regularly until she's mastered walking.
Babies develop skills using different methods and different timetables. But if your child hasn't shown an interest in getting mobile by some means (whether it's creeping, crawling, rolling, or scooting), figured out how to move her arms and legs together in a coordinated motion, or learned to use both arms and both legs equally by the time she's a year old, bring it up at her next doctor's appointment. Keep in mind that premature babies may reach this and other milestones several months later than their peers.
So don't worry, she sounds like she will be fine.. Good luck and I hope this information helps.
Bella