I went back to work yesterday and my lo ate 14oz. I work 11 hour shifts from 8-7. I pumped at 7, 10, 1, 4, and 7 for 15 minutes. I got more than she ate, about 22 oz. I'm wondering if I can pump every 4 hours instead of every 3? Pumping at work is so hard! Every time I got caught up with work I had to go pump! I don't want to ruin my supply though! So I need suggestions, can I extended the times or should I keep doing every 3 hours? She's 12 weeks if that matters