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.
Untrue. Your quoting total imports (eg concrete that was largely misappropriated to build Hamas tunnels). The amount of food delivery on average is comparable to before the war.
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
iirc, gaza farms and fishing provided less than 10% of calories to population. animal farms were dependent upon imported animal feed.
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.