Which days should I BD this month ๐Ÿ˜‚

Last month we BD the 4 days leading up to O day and it didnโ€™t work out. Any ideas which days are the โ€œbestโ€ ones ? 4 days in a row was exhausting for both of us ๐Ÿ˜ญ๐Ÿ˜‚