Prevent BV & yeast

So I have BV, I normally get them EVERYTIME I get a yeast infection. I’m worried the yeast infection is gonna come back after with the medicine I’m taking for BV, so I’m looking for ways to basically not get another yeast infection . I also basically get both once a year around the same time every year. I’m trying real hard to not get it again after this, I know boric acid helps, but my doctor said only do it once a month, the PA said no more than once a week, the bottle says I can do it 7 days straight, I guess I’m just looking for advice on what you did to help? Also what kind of probiotics, or other vitamins do you recommend that helps with all that??