When did ur newborn start to sleep through the night??

I know my son is still young (2 weeks old) so I'm in no rush to get him on a sleep schedule if there's no need to but he wakes up every 2 hours to take his bottle & eats about 2 1/2 ounces each time. I'm a FTM so of course I wouldn't know what's Normal until I ask my doctor & ive heard different things & read different things. It's hard bc sometimes he'll go right back to sleep but other times he'll be up until the next feeding in 2 hours. It's a little draining at the moment & it's really taking a toll bcI'm going thru postpartum depression & haven't eaten much since I delivered him so when he wants me to walk around w him in my arms to soothe him back to sleep, sometimes I can't bc I'm feeling light headed & faint & my ears start ringing. I had a fainting prob while I was pregnant too. It's probably one of those things I'll have to get used to & there's nothing wrong w that. But I figured it doesn't hurt for me to still ask :)