Coffee does not keep me awake, it has the reverse effect, always been that way . Tried to stop and it threw off my sleep , so I'm drinking it again 2 cups in the morning and 2 at night reheated. I only use one of the measuring cups that comes with the Folgers medium roast , 3 lbs last me about a year. Post SHTF I may save the grounds ,dry and rebrew till it's too weak to recognize , I haven't yet but I plan to buy coffee beans and store coffee that way . I have antique as well as electric grinders. Currently only about 20 lbs in storage . Have to remember that it might be as valuable as gold when it's not readily available.
Years ago, I attempted that. Oven dried in a flatish pan. If it had been successful, I very likely would still be doing it. All the same, YMMV and if anyone experiments with it, please let us know.
My SIL and Daughter works the antique shows from here to Alabama, The old drip pots they can't keep once they put them up for sale, Normally $ 25.00 is what they fetch!
Roasted ground sunflower seeds will help stretch your coffee. Doesn't alter the flavor as much as chicory.