Hey , my name is Savannah. My daughter will be 8 months tomorrow and is barely sitting up. She will for a bit but then will fall over , she isn't crawling or anything. She is very chunky so I'm thinking that may have something to do with it and she was also born. 7 weeks early , almost 2 months but I still think she should be doing more at 8 months and it makes me very upset excpecially when people ask about it or comments on it..