Question for Exclusive Pumpers

Kristina💙 • • wife • fur mommy • baby boy 06.22.16 •
My LO is 3 weeks old & im trying to start exclusively pumping for him. How do you find time to build up a stash between nursings? He eats about 30 minutes a boob sometimes, and eats every 3 hours (at night still as well)... I feel like I have no time to pump between his feedings.