I thought babies produced more lactase (lactose-digesting enzyme) anyway, even for people (and ethnic groups) with lactose intolerance in adulthood? Human breas

I thought babies produced more lactase (lactose-digesting enzyme) anyway, even for people (and ethnic groups) with lactose intolerance in adulthood? Human breastmilk contains lactose - so the body expects to have to break it down at that age. (I'd have thought any preference for goat's milk over cow's would be connected to the protein it contains.)