My DD is 5ish months old and has been really trying to crawl for the past month. previously she has been able to push her body from one spot to another about 1 metre away in 3 or 4 seperate movements. now she is lifting up her back half then lifting up her front half and is at times (and more frequently) lifting up her middle for only a few short seconds. the problem is she has been and still is so frustrated that she whinges, squeels and moans almost constantly when she is on the floor!! how long do you think it will be before she masters this. i have heard that babies normaly crawl from about 8 months or so so does that mean i am gonna have to wait another 4 months before she gets the hang of it?