My son is now 7 months and 20 days old but he is not crawling yet and sitting by support only but he is standing with support many time and his legs are so strong

A. crawling can start anytime around 6 months of age. but many times it may come to the child by 12 months of age also. if thef child is not having any other complaints no need to worry. it is advisablge not to use walker and let the child play and make attempts on its own. give regular baby massage and diet and encouragement