My 10 month old won't crawl on all four. She swims (?) across, and moves in a sitting position, like a frog. It looks adorable, and she goes fast, but I need her to crawl. When I put her in the crawling position, and try to get her to crawl, she doesn't. She could lift herself to a crawling position, but that's it.
She's already picking herself up to stand.
Thanks so much for any advice.