Crawling before sitting

LG is on a mission. He is on his fours unravelling the mystery of what is there in every room, why some rooms are always closed, waiting for an opportunity to push his way through when the doors are open. He has learnt to climb over the diwan, pull himself up, crawl over us and sleep on The Seniol's tummy.

I was told that kids generally sit first and then they learn how to crawl. That phase did not happen in his case. He started by crawling and is still struggling to sit without support.