my daughter has been being able to get up on all fours but not move, but she does do the little humping motion like she…

my daughter has been being able to get up on all fours but not move, but she does do the little humping motion like she wants to crawl, then my son jumped up on all fours and tried to crawl but he toppled over and rolled over a hand full of times 😢 my oh my they're getting so big and I swear I'm gonna ball like a baby when they actually start to crawl