Sorry William, didn't read your question correctly :unsure:
My three greys have access to food at all times.They have a morning feed of soaked tropical fruit then i fill their dishes with a little seed & pulses for the day.In the evening they have a variety of food for dinner,mixed vegtables or perhaps mixed fruit, then again they have their seed in their bowls.None of mine overeat, they just eat when & what they want.