Im just wondering what is a normal pinkie size for a 2 month old corn? I'm feeding her the smallest size at the moment but it seems like she is on the hunt for more before five days has passed. Is it okay at this point to bump her up to 2 small pinkies per feeding? She's 11" and I don't have a scale to weigh her on currently, I'm hoping to find a cheap dry scale this week and get it ordered.