My baby girl is 6 Months old. She was born in twins (baby boy) She is very weak. Her leg and hands are very soft she moves her leg and hands but not like her brother. Her brother can put his feet properly. Use ek hath se pakad lo to wo stand krta h bt wo leg bhi ni zin per, i'm very much worried about her. Kya wo chal payegi ya khade ho payegi apne leg par. Please advise me what should I do for her?