Breastfeeding and pumping?

Hi mummies. Ftm. If I chose to bf do I need to pump? Considering I don’t have letdown and my boobs are not sooo full but I know there’s milk enough for my baby’s feeding cause she’s showing enough output. Cause I used to pump in the morn and bf at night but I’m considering to bf throughout day and night. So again do I really need to pump?