Rabbit still not eating normally after tooth grinding?

Yesterday, my rabbit had her teeth ground down at the vet because her teeth were too long. Over the weekend, I had to feed her Critical Care five times a day because she couldn't eat anymore. My vet said I should continue feeding her Critical Care for two days after the "surgery" and mix in some pain medication. Despite the teeth grinding, my rabbit still isn't eating normally—he's only eating a few bites at a time. Is it normal for her to not eat as much? Will her appetite return after a few days? I'm very worried 🙁