If you don't mind, which motion-detecting sleep mat did you wind up going with?

brianwawok · on Feb 24, 2021

Not OP, but we used a competing product, which is

It is a foot attachment that basically watches heart rate and oxygen level all night, and freaks out if something is wrong.

Only a very few accidental freakouts (like kicked off foot), but gave a lot of peace of mind. Not cheap but seems pretty solid engineering wise.