Re: Can pumping volume increase?
What kind of pump are you using?
The answer is YES. You can definitely increase pump output. It sounds like you will increase pumping to 3 times a day, and your body will get used to making milk at those times. You can also pump on the way to work and eventually you'll get more milk. I did this and would get a half ounce to an ounce total and in a week to weeks was getting 4 oz during that same session and still my regular 4 ounces at my 9:30 session too.
My first couple days back I felt hopeless. I wasn't keeping up. But with some tweaks and some time, I was able to pump enough for DD for the whole first year.