Hi , is depend on the demand . Before my baby taking solid foods. I was pumping 3 hourly. After my baby taking solid foods, I change to every 4-5 hourly. I will try to fix on every four hourly to maintain a good milk supply.
Some of my friends can pump out two milk bottles , is depend on individual. My milk supply enough for my baby , even I only can pump out 4 ounces every 4 hourly.