BF and pumping

Is pumping really necessary for breast feeding? I’ve been trying to do the whole “every two hours” thing. But every time I get 1/2 way through the 10 minutes nothing comes out anymore. Additionally it’s just so hard to feed baby in the middle of the night/morning and then stay up and ADDITIONAL 20-30 minutes to pump what little I get(not even one oz. more like 1/4 of one if I’m lucky), store it, and then clean everything for the next session. I’m exhausted.

Baby will be 3 weeks Monday