The thing about this particular doomsday scenario, it's likely things like electricity still work, with all the goodies that go with it...like the ability to eat a couple of steaks a week for months because of a couple good-sized sub-zero freezers. If I had to worry about electricity it would be a different ballgame here in the short term.
Yeah that's right... If there's something in the freezers... I am mostly canned, leaving the freezers for meat and bread and frozen fresh fruits primarily. That's my next thing to tackle too - I want to quite my reliance on freezers as much as possible.
When I got crippled back up this last time, I had to rely on my stores - being too gimped up to move much... The first thing I ran out of was meat, believe it or not. My stock was down some, having missed hunting season, and having ate more than half of the half-beef I usually stock... So less than a quarter beef, maybe a quarter venison, a little elk and moose.. but I was out of freezer stock pretty quick, and canned meats went like a flash. Since then, I have altered my inventory, buying heavier to canned meats and prepared canned meats (stews, chili, etc), ad changed my diet to include more of same to keep a larger quantity rotating...
Now, between canned tuna, salmon, beef, and chicken alone there must be 60 days worth, not touching canned chili, spaghetti sauce, stew, soups, hash, and such... And the freezer is good - I have an elk hind quarter, most of a deer, and at least a quarter beef in there right now.
Half way through winter, but I still have plenty of produce and fruit racked up to last me well into summer, maybe even fall... Though it would start getting inventive sometime after spring.
If I couldn't go to the store it would suck a little bit - no ice cream, tater chips and the like... no fresh produce... but I could get by a very long time eating dang good.