I gave DD yoghurt and cheese, but never any cows' milk until a fair bit after 12 mths. I still don't like giving her cows' milk to drink, even though she has it on her cereal. As a baby, I used EBM on her weetbix until she was over 12 mths (picture me in the morning, half naked in the kitchen, aiming at DD's breakfast bowl!). The yoghurt and cheese thing I was fine with because my DD absolutely loved them, but I can see where you'd make the link in your mind and they really aren't essential.

If you're doing BLS and you are having either in the course of a meal (or DD1 is) you could give her a try, rather than introduce it to her specifically. Otherwise, you're right, your BM is much better.