can I condition my body to produce the same amount of milk just over less time?

Abbie
Iv had to resort to my pumping exclusively and it's just so much hard work, I'm having to pump every 3 hours and I usually get any where between 4-6 ounces combined. It's just becoming so much to feed my baby the bottle, then pump. I was wandering if there was a way I could condition my body to pump maybe every 6 hours but get 8-12 ounces in that session??