i have a 4 week old and even though BFing for us this time as been "fairly" smooth sailing with DD1 we had no end of problems. My biggest tip (may not work for everyone but it is for me) is to air your BB as much as possible. I found this quite hard so even though i am leaking i have put a towel on my bed and i sleep topless. If i have a bad feed and feel slightly sore it often feels 100% better after a night of airing. I think the reason this helps me so much is because when i wear a bra and nursing pads my bb never seem dry so they dont get a chance to heal iykwim.
Oh it also means i have to wash my sheets more but it doesnt bother me i think my BB need fresh air i hope it gets easier for you