Well, put as many people as you can at the research table and try to get to farming 3. The crops wont regenerate any faster and watering the field does not help either.
It will take only 2 people to empty the field before it regenerates. You can have them forage the berry bush if there is anything left or send them to the table.
Keep an eye out for mushrooms and have your children harvest those. It may help keep you fed until you get the tech points for farming 3.
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"Things to remember. . ."
"First, you forget names. Then, you forget faces.
Later, you forget to zip up your fly after exiting the men's room.
Finally, you forget to zip it down."