It is enough
. I know it *seems* weird. Because the medallions are so nutrient dense, you feed much less in volume than you would kibble. It's sort of the same concept as when you feed a premium kibble compared to a "junk kibble" - you feed less of the premium kibble bc it is more nutrient dense. Are you totally confident that her weight is still 2.5?
For comparison, my Marcel weighs 3.4 and he gets a total of 2 medallions per day.