How many ounces of breastmilk should my 2 week old consume?

I pump when he doesn’t want to latch and I’ve been giving him 2 ounces every 2-3 hours. He seems to want more than 2 ounces now (around 2 1/2 maybe 3) but he also doesn’t want it within 2-3 hours every time. I don’t want to over feed him though. At night he could go 4-5 hours if I let him but I’m not sure if that is safe. On the other hand it’s hard to wake him up and get him interested in eating every 2-3 hours and I’m so exhausted. I’ll continue if I need to but I’m so defeated and just want some more rest. Thoughts?