Yeah what I did was drink a lot of water , milk supply tea and ate oats for breakfast. And I put my daughter to my breast before every feeding until eventually she didn't need the formula right afterwards. In like two weeks my supply regulated to where I only need to give her formula once at night and when she goes threw a growth spurt and needs more food.

yes. depending on how long it takes lots of work and dedication. put baby to breast as often as possible and start pumping