Getting started

Hi I want to exclusively pump for the next babe coming in a week. Ive been trying to figure how to get started. With my first I failed breast feeding and switched to trying to pump but only got 1-2 oz every 3 hours from both breast combined. I gave up bc I was having a hard time recovering from birth. I want to just start out pumping for babe this time bc I have a lot of feels and trauma from my last experience breastfeeding. How do I start the process? Do I bring my pump to the hospital and start pumping right away after birth? What if my milk isn’t in yet? Do I use a manual til it come in? Do I feed baby formula until my milk comes in? Help please