Fiat do you have Cactus or Succulents. Cactus can be dry for a very long time but cannot be wet for long at all before they will die.
Cactus can be dry for months, wet they will die in a month. Cactus you want the soil to look dry. If it looks wet for more than 2 days it is time to worry that you have over watered. My cactus soil looks dry one hr after watering.
