Generally would be taken to mean you had a meal at night then go to sleep. then the following day eat nothing and go to sleep. Eat normally when you wake. Eati

Generally would be taken to mean you had a meal at night then go to sleep. then the following day eat nothing and go to sleep. Eat normally when you wake. Eating one meal a day even breakfast would be considered a 23-1 intermittent fasting schedule or something, but realistically you are in a fed postprandial state for several hours after the meal so there's some daylight between one meal a day and actual 24 hour fasts.