Increasing supply

Jazmin

I see all these posts and products on women pumping more than 4+ oz at a time. From what ive read you make on average 1 oz per hr... after 3 hrs my breasts hurt so bad and if i pump im only getting 3-4 oz (both breasts combined). Im curious to get more just to make building a stash easier but honestly it sounds like it would hurt so bad for my breasts to be carrying that much they hurt like crazy after barely 2.5 hrs and im clearly only producing an 1oz an hr. Wouldnt increasing my supply cause more pain? Would I have to pump more frequently than every 3 hrs?