Do you have a 6-12 month old who is not yet crawling? If so, this post will give you helpful exercises to help your little one achieve this milestone. A child may begin crawling on their belly (army crawling) as early as 6 months, and on their hands and knees (quadruped crawling) around 8-10 months. Some babies skip army crawling and go straight to quadruped crawling. Try the following exercises with your little one to help them prepare for crawling on their hands and knees: