I'm in a similar boat... I'm 3 nights shy of maintaining Platinum status through 2023 which means I'd need to book 3 nights in the next 3 weeks to qualify. I'm sitting on approx. 75k Bonvoy points, but not really sure how to spend them or if it's even worth the cost of a few room runs to keep Platinum. I'm leaning towards not worth it and maybe just divesting from Marriott altogether after I run through my points balance.