Hungry hungry hungry!!!

Guyssssss! I am going to lose my fricken mind! My child (5yo) is hungry 24/7! She’s not big on breakfast so I bought her Pedisure shakes. She drinks that and maybe has a little something for breakfast. She eats till she’s full at lunch then 20-30 mins later asking for more food. If she doesn’t eat all her lunch I leave it for her to eat later. Same for supper.. 20-30 mins later hungry again.. constant!! What do I give her or do!? The constant asking and telling me she is hungry is going to make my head explode 🤯🤯🤯 i do not give junk food for hunger either.