Joni,
If you're wearing a bra full time, , and being a 36D, I expect that you are 😉. If you have a Monday thru Friday schedule, it may be easier to have a minimum of a 5-7 bra rotation. I'm usually in my bra for about 16 hours a day and then into a leisure bra or a nightie with built-in support for sleeping.
It's best to give your bra at least 48 hours of rest before wearing it again. Like John said, the more work you ask of your bra, the shorter its life span. Expensive bras tend to last longer too. I don't mind paying more money for a good quality and comfortable bra that I can rely on for the day.
😉👭💋❤️🥰👙
Sophie ❤️