Some other options...
I give my 18mo daughter goat mild cheese for snacks instead of cow's because it is easier to digest and she loves it! , but for a milk substitute I give her hemp milk which my pediatrician suggested. It has so many good qualities that a growing child needs (protein, and omega 3's!) . You can buy it in any health food store or whole foods market, I like the Living Harvest brand (it comes in a box) But I really prefer to buy the hemp nut seeds and blend them myself into a smoothie with banana ( you can also add berries or any fruit). I do the same with chia seeds another great alternative that helps with brain developement and boosts their immunity. You can also mix chia seeds into oatmeal, soup, spaghetti, anything really! (and they dont' add a flavor)