I'm sure I'm being painfully obvious but the only possible way to clue INMAY is with some kind of shitty-ass partial. If you haven't looked at the database only SN has used this partial, once, back in 1999. The entry itself would be legitimate; we're talking very bottom-of-the-barrel stuff, however. There's both a book and movie with the title "Seven Days in May" that seem to be relatively famous. Neither is known to me, though that's certainly not a kiss of death. IMO you need some really top-quality fill/theme answers around this partial to justify its inclusion. There's no way you can rearrange theme answers or blocks so as to avoid it? Make sure you're not holding onto some non-theme answer that's forcing you into using INMAY. I would personally be very wary about using this in a puzzle I was submitting to a top-tier publisher like the NYT or LAT.
Here's how you'd have to clue it:
"Seven Days ___" -- With or without a parenthetical explanation after the quotation mark, e.g. (1962 political thriller)