Pumping?

If I pump 1oz in each breast in 10 mins is that good ? For a 4 week old baby.

Also if I pump and let’s say after I’m done or during the pumping session and baby gets hungry and I latch her will I have enough milk for her to eat from my breast or I have to give her what I just pumped ?

First time mom here and the whole pumping/breastfeeding is hard I just wish I could not pump and breastfeed my baby every 2 hours or whenever she’s hungry but if I don’t pump my breast hurt & I start leaking through my bra and pads 😭😭