The JW guide (which my wife fully adopted for almost the entire sex starved marriage)
NO ORAL, not for me or for her.
NO NO NO ANAL (what I wanted most).
Sex position missionary or spoons.
NO Dirty talking or her touching her clit or boobs to help things along.
No mutual masterbating.
No loud grunting or anything that would make you think she liked it.
NEVER get a sex manual, cuz what do you need that for.
No porn of course.
In the dark preferably.
Even when trying to have kids, sex 1 time a month is optimal.
In the end, after decades, I got 2 months of good sex before everything fell apart.