I like the sentiment, but the winter months aren't when you need to worry about starving: the hunger gap occurs in spring. Obviously this is highly climate dependent, but in much of the non-tropical northern hemisphere most crops don't produce a first harvest until May at the earliest, and the calorically dense crops usually aren't harvestable until midsummer or later (often much later). We can push that date earlier nowadays thanks to advancements like polytunnels, satellite weather forecasts, and specialized crop breeding, but even nowadays something like an abnormally wet spring can delay sowing by a month (which in agriculture terms is basically that "This Little Maneuver's Gonna Cost Us 51 Years" meme).