Good luck with that. Not all babies want to take the nipple. And particularly those ones who are only familiar with formula. Shoulda started them out on the nipple in the first place. Moms these days want to have a total medical intervention birth instead of natural. Most would not even consider a natural birth, and many even plan their births using drugs to induce. Then when it's over they want to go right back to work leaving the baby to a nanny and formula. It is a very bad fad. We do birth all wrong in the USA. Most births should be natural, at home or a birthing center within quick range of an ER should that be needed, which it generally is not because pre-birth examinations reveal who is at most risk and who is not, Those at risk should have a hospital birth, those low risk births should be done by midwives. Pregnant women are pregnant, not sick.