codys quest (for me and you)

I'm still hoping for the "nexon forgets for a few days" thing to get it. I missed a few days but who knows, maybe I will get lucky.

Not possible, it's hardwired into the quest data. Tomorrow, you will get your last food item. If tomorrow does not give you 14, you shouldn't waste your space holding onto them any more. You will not, however, be able to pick up your lunchbox tomorrow. You'll need to wait until the next day to get that. You only have one day to pick up the lunchbox, so don't dawdle.