Curious about diet meal times

I don't usually eat breakfast.

I don't tend to eat a lot for lunch either; about half a regular meal? If I eat lightly, about a third.

I tend to eat a bit more for dinner than for lunch; would it be okay to have a meal like this?

Like this: skip breakfast, eat only half or no lunch, and eat only half for dinner.

Then will the fasting period be too long?