Leaking breasts when bottle feeding

Lily

Currently preparing my postpartum bits ready for delivery, however I am planning on bottle feeding and don’t quite know how it will work with my breast milk supply. I know when my milk comes in I will experience some leaking, but what actually happens to my supply when I don’t use it? Will I be using breast pads for months after birth or will it eventually go away. First time baby problems I guess ahah