I feed just dry in the morning and just wet at night. I hardly ever mix dry with wet, except to get Chloe to eat more wet food.
Chloe's dry food is Nutro Natural Indoor Kitten, and for her age/size it says to feed her 1/2 cup a day, so I give her 1/4 a cup in the morning of dry. Then I give her as much wet food as she'll eat at night (she's not a huge fan of wet). She never eats as much wet food as I give her (for example, if I give her a 3oz can of Wellness kitten at night, she'll eat maybe half of it, or less). I still feed her 3 times a day, so the 3rd feeding will be more wet food. Chloe is only 6 months old and is tiny for her age so I'm not concerned with overfeeding her.
Matilda is eating Natural Balance Duck & Pea dry food, and for her weight it says to feed 2/3 cup a day so she gets 1/3 cup of dry in the morning and then 3oz (approx) of wet food at night or 1/2 of whatever the daily recommended amount of that particular wet food is. I'm more aware of how much food Matilda eats because she is large and lazy.
Does that make sense?
If I had just one cat, I would leave dry food out all day and feed a little wet in the morning and a little wet at night.