How often to pump- EBF 1 week old

I plan on largely exclusively breastfeeding, with my husband taking on 1 feed per night and maybe a random feed here or there during the day if I’m unavailable, and when the baby is older (a few months), I’d like to have enough stored to be able to go away for a weekend, a whole day, etc. Baby is 1 week old and eating well. I want to make a nice stash but not overdo it and make my supply ridiculously high. Right now I’m getting approx 3 oz total from a 15-min pump.

How often do I pump? Thinking 2-3 times per day but I really don’t know