For what it's worth, I was lactose intolerant when I was in elementary school. I would take my lunch money and buy those frozen pizzas and chocolate milk knowing that. I would get sick, but over time, I was and am still no longer lactose intolerant. You could, that is a big could depending on how you feel after consuming dairy, give that a shot and have some dairy everyday, put up with the symptoms, and see if your intolerance goes away. I don't know if I would do that at my age now, but I was young, dumb, and loved that cardboard frozen pizza.