read your thread bro, plants are looking ok... a bit of advice for you.
for every foot tall you need a gallon of growing space, so a 2 ft plant will need at least a 2 gallon pot. try to avoid transplanting by starting in a pot big enough for the life of the plant.
watering... next time you water, take a mental note of how heavy your container is right after watering. then wait at least 2 days and poke your finger into the soil a few inches and see if its dry. if it is still moist wait 6 hours and check it again. as soon as the soil is dry 3 or 4 inches down ( depending on pot size, use common sense ) take another mental note of how heavy it is and thats how long you wait between waterings.
foliar feeding... i like to foliar feed everyday several times a day only while they are vegging. as soon as they are switched into flowering i stop spraying them.
i dont have much experience with autoflowers, but you will not see sex on a 20/4 or 18/6 schedule for a long time. sex is better determined after they are switched to 12/12.
hope its helpful. subd