First off, make sure you buffer your coco, if it isnt already. Charge it with some cal mag and a good stable ph. This will decrease chances of having issues.
Go easy on the nutes at the beginning, they dont need much to get started. Because your in Coco you will need to be watering with nutes everytime. Never let your coco completely dry out. At the beginning its a fine line between letting them dry out so the roots can spread out and look for water and letting them dry out too much and causing issues.
Ive always used the wet/dry cycle and the lift-a-pot method. Basically you soak the pot until you get runoff, then lift the pot to gauge its weight, once you can lift the pot and feel its starting to dry out, you soak it again.....Once the are in late veg and flower, you can expect to be watering atleast once a day, some vigorous growing strains may take multiple waterings daily in coco.
Heres the auto flower sub section, you might find some good auto info over there.
Growing plants with the AutoFlowering trait
www.rollitup.org
Best of luck