My feeling about the LFP, and the way I use it, is that I run the car until I want more charge in it, either because I know I'll need it the next day, or simply as a contingency in case I want to go somewhere unexpectedly. Then I charge it to 100% and let it balance. So that might be twice in a week, or it might not be as often as once a week. What I don't do, unless I'm on a long journey of course, is charge to less than 100% then carry on driving again.
My reasoning is that the main reason for doing the 100% and balance thing is to make sure the % charge and the GOM are displaying as accurately as possible. If the car is always balanced when it's charged, it shouldn't really matter if it's longer than a week. The algorithms will be working from the correct information of the 100% start, so should remain accurate. There's no particular reason to charge it up again a week after you last charged it, if you've only driven about 50 miles since then. But any time the car is on an AC charger, I'll let it go to 100% and balance.