DD1 was bfed to 17 m but I never gave her formula or follow-on milks or even milk to drink till she was about 2. I did use to stir a bit of soya based infant formula into her purees tho. Am doing the same with DD2. Both are good eaters and have a varied, healthy diet including other milk products but sometimes I wonder if I've done the right thing. Do babies and young children really need milk?