ds is just over 19 months and also breastfeeds on demand. I think he's still getting loads of breast milk and I have never given him cows milk. He doesn't have any milk as snacks actually. He has goats milk yoghurt every now again. I love oat milk, I cook with it too even for muffins, pancakes and in my home made bread etc. Eventually I will give him oat milk, I don't see a problem with it. Following on from that I will slowly introduce raw milk and home made yoghurt made with the raw milk too. Nuttelex is great as there are vegan cheeses out there, check what your local health food store stocks. I think a probiotic is important if you think there are food intolerance, maybe ask the naturopath about that too.