Congrats, Liliana. That is amazing for your second month, and bodes very well for you!
I would think positively. I do believe once you hit 1000, the odds are you will go higher. Perhaps exponentially so. You could double it for next month. Or triple it. Ask yourself what sent the book up. Were there days when it spiked? If so, plan for another spike. Aim high and figure in the spikes. The book might come down quickly, but not without adding sales to the bottom line. And when a book spikes once, it may spike every four to six days. Might. But figure that in, and set your goal accordingly. Me, I'd set my goal for 3000 for the next month. And then figure out how you might get there.