I don't recommend it, but in 2008 I discovered an almost finished roll of 120 Plus-X in an old TLR. Developed in HC110, I got images from it that indicated it had been exposed in 1981! They were certainly not optimum, and the base density was high, but I was able to scan a couple of them for web use. So I don't think I'd lose sleep over a few weeks -- or even a few months.