I fed my two cats three times a day until they were 6-7 months old, then reduced it to twice a day. Now I keep dry food available all the time as they don't eat much of it, and feed canned or raw meat twice a day (50-70g food per cat per meal - they are both healthy and in good shape, so it seems to be right for them).

But when they were smaller, they were like vacuum cleaners - just sucking the food bowl dry. I don't know where it all went!