dont worry, they will tell you (or you get the hint) when they've had enough. just feed her until she literally closes her mouth or pushes spoon anyway, thats how i judges it with Cerys. Or, if she has shut her mouth etc, offer her something different to eat and then see if she refuses or has a munch lol !! i would rather over feed Cerys healthy food than under feed her and fill her with snacks in between xx