Min, Don't stress! Olivia NEVER crawled at all. She just sat on her bottom until she was 11 months and then bottom shuffled. To this day she has never crawled. Her bottom shuffling got pretty speedy.

We encouraged her to lay on her tummy in an attempt to encourage her to crawl, but she never did.

She did take a long time to weight bear/pull herself up (15 months) and a long time to walk (19 months) but as I speak she is running up and down the house, so whilst it all took her a fair while, she is now rock steady and just like any other 2 year old.........