Re: Will I get my supply back?
2-3 oz every 3 hours should be enough milk for a 3-week old. I can usually get about 2 1/2 oz from pimping, and it's enough for a missed feeding for my one-month old.
Check out the book The Nursing Mother's Companion. There is a chart in the back for calculating how much pumped milk your child needs based on weight. Or if you PM and remind me, I can send you the formula from the chart.