my son is 6 month 5 days old. He didn't started still rolling only half rolling is doing. At which month they will be rolling fully and when they will start crawling

A. The first step is often rolling, an important stage towards crawling and getting around. Some babies can start rolling as early as 3 to 4 months, with most rolling by 7 months. There are lots of things you can do to help your baby gradually learn how to start rolling