So many evening snacks even after finishing dinner....5 yo with big appetite

I'm not sure how to handle my 5 yo's appetite. She'll eat a big dinner then like 30 min later she starts grazing the next 2 hours until almost bedtime. I'm wondering if I need to legit give her a second dinner?

I give her a small breakfast at home, then she has another breakfast at preschool, then whatever lunch and snack they give her. She's basically a hobbit.

I guess my goal here is to cut down on the grazing period without having her go to bed hungry.