Exclusive Pumping

Hi dear mummies, hope you can help me with two questions: 1) will exclusive pumping reduce breast milk if you do not direct latch? 2) my child will cry terribly whenever he direct latch as the milk supply is low, is there any way i can latch him better? He will only wake up when he is hungry for milk and I couldn’t tease him to be awake to latch. 3) he drinks bottle fed formula milk + my 40ml express breastmilk at different feeding intervals.. is it ok if he drinks two hourly sometimes instead of three hours? He seems hungry very fast. He is four days only, thank you!