This is a very late reply, so I don't know if it's still relevant to you or not, but my 2 1/2 daughter is also lactose intolerant. Almond milk is great, esp when they're little and need extra fats. We also use nutritional yeast, which comes in flakes and can be bought at a health food shop. You just cook up the flakes with a bit of dairy-free margarine and some rice/soy/almond milk, and hey presto! Cheese sauce, minus the cheese! It's truly amazing stuff, and extremely good for you (and bubs!).