My daughter is 10 months old. She has not started to crawl. What should I do?

my son started crawling at 11months. he flipped over at 6mths only whereby the milestone for baby should be around 3months. we didnt force him or do anything. because we went for his checkups and all are normal. he only started walking at 17mths too. now an active 4yrs old toddler whom run non stop and play stop and jump non stop. so dont worry. every baby is different. my hubby is constantly telling dont compare him with other kids even till now. i guess mothers are always worrying non stop. haha.