Breast issues

Ever since about 12 weeks pregnant, I've had problems with getting rid of a yeast infection under my breasts. They have grown 3 cup sizes now (from C to DDD) at 29 weeks, and even though I go braless when at home, shirtless when I sleep, and use cream, nothing is helping. My ob just tells me to keep doing the things im doing. My breasts are constantly sweating underneath where my belly is so high up that they rest on it-so keeping that area dry feels impossible rn. But when i wear a bra, it makes my infection even worse than going braless. Any special creams/tips to help get rid of this? I'm gonna bf when the baby gets here so I definitely want this gone before I give birth. Right now im just using a generic brand antifungal cream, but if anyone has any recommendations on a better cream to use please let me know!