Hey!
That's a trial and error thing...
If you drop CPU INT to say, 5, you may want to bump up CPU PDRT and coverage by 5 clicks each, as a starting point.
From there, let the games tell you if you need more or less in terms of CPU pass defense.
Word of warning... there are a lot of ebbs and flows in Madden 20. More than I have seen in prior iterations. You can still see trends over the course of a few games, which can be 'fixed' via slider alterations, but the game as a whole needs a season's worth of games as a legitimate sample size. Maybe even two...
It goes back to my general theme: get it close to what you want, and live with it. Don't chase too hard for finite stats or specific animations. It's very easy to fall down a rabbit-hole in the slider world, and then the immersion is all but gone.
Madden 20 can be extremely immersive if you let it. This is coming from a guy that hadn't finished a full keeper season since Madden 16 (April / May 2016). I finished my first keeper franchise season in Madden 20, just a few days ago...