Hey there!
my FS said to BD every 2nd day.
If I knew that I was going to ovulate though I would do it once a day especially because my DH's sperm is really good.
I have heard that if DH has a low count that every 2nd day is better because then they have time to develop some more....IYKWIM?
Also...apparently sperm can last 3 days in the cervix waiting for the egg.

FIngers crossed that this is the cycle for you.

SAM