I'm in a similar boat. Bought enough grain for 4 batches over a month ago when Austin Homebrew had a free shipping deal or something like that. Expected to be able to bang them out pretty quickly, but my brewing partner is obviously not as interested in brewing as he once was (now that he has a kid).
Anyway, my apartment wouldn't work to brew as I don't have a place with enough temperature control. When I move into my new apartment next week, I'll buy some new gear and use up the rest of the grain. By then, it will have been about 2 months, though the majority of the grain has stayed sealed in the plastic bags inside the box it came in. Some of the 2 row got used up when we were able to find time to brew one of the batches (a SMaSH IPA), so that one bag had been opened and is now sitting in its bag inside the empty brew kettle with the lid on.
These beers may not turn out quite as good, but I'm still going to use it all up!