EWCM & Ovulation - HELP!

First off let me say I know we can’t always depend on our CM, BUT we’re TTC baby #3, and for our first 2 we never used OPKs or bbt - we simply BD around the time I had EWCM and it took both times.

With that being said, with my first two pregnancies I would have EWCM (heavy! Like it would hang out of me when I would use the restroom 😂😝) for like 4 days!

But this year (I’m 28) I’ve noticed I only have EWCM for one day. Sooo, my EWCM appeared on 12/2 and we BD on 12/3 (and again on 12/6).

MY QUESTION IS... for those who experience HEAVY EWCM +++ use opk and/bbt, do you find that you ovulate closer to the egg white day or farther from it?

I’m just trying to get a more accurate idea of when I might have actually ovulated. Thanks!!!