adult cats don't really need to be fed three times a day - twice a day is ample
and I don't see any harm in putting out a day's supply of dry food at one go, as long as you weigh it - your bedtime might be a good time, as I assume that is fairly regular
I put out a measured amount of dry just before I go to bed, which my three are waiting for, and offer wet food in the morning and around 6pm, but they are rarely that bothered about it, and half of it is usually chucked out