Hello, my son is 7 months old, he doesn't craw yet. But partly my fault, he doesn't get all that much tummy time. I lay him on his tummy, he'll be fine for a little while then gets mad, and either rolls over him self, or gets fussy until I get him off his tummy. He sits very well, and can roll both ways. He tries to sit him self up (from laying down) doesn't quite have the strength for that yet, but he can stand, if he has something to hold onto for a while. But doesn't craw. I know that all babies are different, I just feel he should be crawing, everybody always asks me, is he crawing yet...no. Maybe I just worry too much.
Any ideas on how to help him, and how old was your LO when they started to craw.