could it really be enough?

could it really be enough?

My daughter is two weeks old she was born at 37 weeks and wouldnt latch ...i been pumping since then ..she will drink 2 oz a feedig sometimes more every 2 1/2 - 3 hours ...she is just now starting to latch ...today she latched for 5 min and didnt want anymore ..could she be getting 2 oz in 5 min?