Near the end of this video, you'll see a move Ana has been practicing recently.  Essentially, she pushes her forehead into the ground and kicks her legs behind her frantically, hoping to propel herself forward.  It does not work.  We know Ana is weeks (or days!) away from crawling and these are her attempts to discover exactly how to do it.  We don't have the heart to tell her that she needs to lift her head and use her arms, too.  For now, we are buying ourselves time, since a mobile Ana is something we are just not ready for.  Still, we know it is only a matter of time before she lifts that little head, extends those arms and darts off like a rocket.