Question about breastfeeding

Tatyana • Aye👌🏾 David Jr born May 2nd 🤱🏾

So when my baby is born, if I plan on breastfeeding, will my milk just be there? I’ve seen some women post about how their milk came a few days later. I planned on asking my DR Tuesday during my checkup. A nurse told me that as long as I was persistent with breastfeeding it would work.