My BB also don't like formula. When there is no place for breastfeeding when go outside, I will give her formula. But she only drink 1 to 2 oz of formula (if bottle-feeding of breastmilk when I am not at home, she can drink 8 oz for one meal), and then wait until I breastfeed her at home. It is amazing how a little baby can be so tolerence! Maybe she knows what is the best for her!