I'd just stick to strictly breastfeeding for now. Some babies get confused when switched between mommy nip and bottle nip.. and can't latch properly afterwards... if you're tired don't worry you will sleep again!! My baby is almost 4 months now and sleeps so great at night and had been since about 2 and a half months. Your baby is so tiny and needs that extra comfort.. skin to skin contact and bonding time. So just be patient :)
Wait a few weeks before you start pumping unless necessary. Bub stimulates your supply better than a pump will and being early days your supply is still setting in. Goodluck and congrats. And the rest will all come naturally :)
Does your baby have any issues going from nipple to bottle? I dont know when i should start pumping.
My baby is 11 days old and i pump. A lot. So when im too tired to breast feed her my husband can still give her my milk and i can nap. Thats about all i have for now :) lol