If you have sex just once each day of your fertile window are you covered? Is that enough?

Our schedules are flipped this cycle and looks like I’m ovulating early (period came early). So sex will be like us switching and coming home from work. So we can do once a day without being exhausted. Is this enough or the two days before and day of ovulation do it more than once? And if so, can it be repeat rounds that same time or like morning evening? Thanks!

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