She doesn't have to go back until 2 years. They are not really concerned, but want to keep an eye on it.
I've decided to go to Almond Milk instead of Soy. I am hoping there are some not so 'sweet' brands too so that she doesn't get stuck on sweet milk. I'll have to go see what is out there.
Thanks for all the responses

Yes I think Livi is just petite, there are a lot of petite people on my side of the family. DH's family most of them are TALL!