I would go on with normal feeding shedule +1 day, since the plants need a bit less. everything you feed her in the last week, has pretty much no impact, as long as you feed her something. There are leftovers in the soil. So you could use only water in the last week, many skip on Nutritions the last week. Its also smart to time the last watering in a way you watered her 4-5days before harvest, so shes not starving but rather dry, speeds up the drying process and therefor quality.