Breastfeeding & Pumping advice...

I’m a FTM (currently 38 weeks pregnant) and been having questions about this...

1. At how many days or weeks do you started to pump after giving birth?

2. How do you do it? Do you latch your baby on one boob and the machine in other? Or you leave your baby to eat peacefully and then pump? How many minutes after or how many minutes before do you pump?

3. If I pump before breastfeeding wouldn’t I be taking milk away from my baby?

I need a big stash before going back to work for the person that will be taking care of him...

I need help 😫