Lifting the pot tells you more about when to water than any moisture meter or schedule, and it takes two seconds. A freshly watered three gallon fabric pot has an obvious heft, and once it feels close to the weight of dry soil it is time. Rough dry and wet weights for the common pot sizes are listed on https://turboautoflowerseeds.com so you have a reference before you develop the feel. Autos punish both extremes, so this habit is worth building in the first week.