C.O.
Crawling helps with the left to right motion that you use when reading, but there's no reason to keep him from walking. Even the child that did not crawl first can learn what they need to read from other areas, like riding a tricycle. You can sit a couple of his steps away from him and hold your arms out to him and encourage him to walk to you. Also there are push toys made just for this. He will learn to walk with or without your help and then the fun begins!