Need some answers !

RS

My son is 14 weeks and I started office from last week. My mother in law taking care of my son. I’m pumping 3 times in my office 9am, 12 & 3pm. In these 3 sessions I got 18-20 Oz and my son taking 4 feeds from 9am to 6pm and taking 20oz.

Is I’m pumping enough? Not sure if I need to pump more to get some extra milk(just incase my baby need more).

How much you’re pumping? And how much you’re baby drinking?