Need as advice please! My boy has turned 1 few weeks ago, I've started weaning him on to cows milk now. When I give him full fat he's sick within 30 minutes or less, but when I give him skimmed he's fine not sick at all. I've continued to give him skimmed milk, but is it ok for him to have that instead of full fat? Have been giving the same amount of skimmed and full fat in his bottles/beakers.