It's even worse than that because it shuts off every few minutes; then it waits exactly 1/2 hour, and then kicks on again.
In two days, the tanks rose about 20 inches, which, at 40 gallons calculated per inch, is 800 gallons ... or 400 gallons a day.
As you said, my only choice is to conserve.
Later, when money permits, I will consider drilling another well (the property has an elevation change of about 400 feet, so, what I can do is put the well at the low point of the property and pump it up to the house).