Pumping, breastfeeding & pacifiers

So, I've been ebf for only 6 days since my little girl was born and she just isn't eating well enough and I'd like to start pumping. Just looking for some information on where to even begin with doing so. She only eats her best with a nipple shield and so I'm waiting to pump and bottle feed her assuming she'd take a bottle better since we have some troubles.

Also, I passed on using a pacifier since it was recommended to do so for the first month or so while BF and now that she is going to be using a bottle, would you still recommend waiting?