Also, does it have to be normal milk or can it be low fat/trim (as that is what the rest of the family drinks).

THANKS!!
Can only really answer this one as I remember reading somewhere that under 2s should be having full fat milk. (I currently just buy the full fat one for all of us - DS hasn't really gotten into cows milk yet. - can't be bothered having two different sorts of milk in the fridge just in case DS decides he likes milk)