DD is 12 months old and I'm now trying to make the transition from formula to moo cow milk. However, dd isn't keen to say the least!! I spoke to HV who said definately not to mix formula and cows milk. She didn't realy say why and I didn't think to ask at the time - doh!! What does everyone on here think? I can't see why mixing the two would be a bad idea can you? Is it ok to keep her on formula for a while?