It is not necessary that breastfed babies poop daily. But if your baby is passing hard stools, it could be due to lactogen feeds. Your breast milk supply won't increase if u keep giving formula. The more u breastfeed, more your will be your supply. When your baby is hungry, first offer breast milk and even then if she seems hungry, u can top up with lactogen. Also u need to be relaxed, don't take any stress, eat healthy, drink plenty of water