Olive oil, COQ10 and Fish Oil questions

Dear experts,

Could you please tell me how much olive oil daily is enough to be beneficial to bc? Also, I saw in a recent post something about COQ10 causing tumor cells to grow faster???? Can't find it again. Can anyone elaborate? I am taking 300mg a day.

One more thing...anyone have comments of Fish Oil/Omega 3 supplements?

Thanks so much.
Cheryl