Mine would have one in the morning, one in the evening and a plentiful supply of dried food inbetween for them to have should they want the extra, and for a bit of variety.
They would soon let me know if they wanted more. I didn't like the thought of leaving much out which wasn't going to be eaten shortly, wet food anyway, especially in warmer weather, such as being harassed as if you hadn't fed them for a month, they give it a sniff then just walk off, as cats do...