breastfeeding questions

*not due til December btw*

for those who breastfed/breastfeed, how do you breastfeed & pump then know when you should feed a breastmilk bottle vs nipple? it's so confusing. I would like to pump & store also so in case my other kids have appts & need to leave baby or when I go back to work. I breastfed 2 of my other kids for only a month/2 months but they were strictly breast only & couldn't figure out how to get them to take a breastmilk bottle & obviously failed 😭 I need all of the tips & tricks. also, I bought these bottles as I have "big nipples"