MCHN's advice is to not let them do that until they are able to pull themselves up and hold their own weight as babies have bowed legs and and it has something to do with that I can't remember... shows what I listen LOL. We do it with seth now and have since he was about 6-7 mths but he was pulling himself up and standing at that age so he was holding his own weight.

*hugs*
Cailin