hello my DD is 4 months and i am a first timer. think i am getting a bit paranoid but when i hold her in a standing position she puts pressure on her right foot and its flat - sometimes she also does it with her left foot so it extends fine, is the same length etc but other times she seems to lift the left foot off the ground or put it on tip toes whilst putting more pressure on the right one. i dont have any other developmental concerns and over the last couple of weeks she is easily raising her head and chest off the ground on tummy time (not that i have done much tummy time to this point). she is not in any pain or anything and when on her back and i push against both feet they both push back equally.
is there a problem or is this kind of normal development.
any thoughts appreciated.