yay I finally got my baby to latch property. .. at 7 weeks old. I have been giving her all formula…

yay I finally got my baby to latch property. .. at 7 weeks old. I have been giving her all formula except one bottle of breast milk a day. I know my supply will increase now because the pump only had me getting 4 oz a day... but now how do I get her to do only breast feed , an not formula.. I don't know where to begin