Hand expressing

ri

I don’t have a pump just yet but I’ve been hand expressing into a 6oz bottle. My right breast produced way more than the left. I can still fill up the whole 6oz bottle within a 4hr range if I express every 2hr for 20mins. Also I do not wake up to do this at night just during the day when I have time. Is that too little or should I be able to hand express more than that? Baby was born a week ago