cabbage leaves for sore nipples???

Lilly • Pregnant baby #2
Have you guys tried putting on cabbage leaves to help treat sore nipples?
I am having a very hard time breastfeeding my 6 day old. I really dont want to give up. I have tried hydrogel pads and lanolin cream. They seemed to help a little but they didnt really heal the nipples. 
Would love to hear what worked for you guys!