The requirement is about five hundred trucks per day of food (so each truck feeding about four thousand people). The fact that on rare occasions they'd let in about half that isn't really a point in your favor.
Before the war Gaza had the ability to produce much of its own food. To subsist totally on imports, about 500 trucks a day is what's needed.
food tracks fluctuate between 2000 and 3000 a month prior to oct 7th. a few more dozens of of tracks with "non-edible consumables" and "medical supplies". rest of tracks are construction materials
ps. good chunk of farms were actually not for gaza consumption but for export (to israel and other places). stuff like strawberries, some leafy greens, etc. but in general farming in region is hard. there is no water. droughts been severe. Israel survives by desalinating majority (80%) of potable water (and supplying it to jordan, west bank, gaza) and recycling 90% of waste water for use in agriculture.