Some law schools appreciate knowing how committed you are to their institution, if admitted off the wait list; that said, how much is too much (or, how often is too often) to communicate with your first choice law school to inform them of your continued interest?

I was told by multiple admissions officers that any more than once every 3-4 weeks was inappropriate/annoying

Self nudes is probably too much, a LOCI or two (depending on timeline) is probably just right, ignoring them maybe insufficient.

Unless you're really hot.