Should i water autoflower seedling everyday in coco or wait til its bigger

Hi mate, autos as a rule don't like to be transplanted and should be sown into their final pot. Watering is the same whatever substrate you use, as seedling you want to keep the soil around the stem slightly moist but not soaking. After a week or so and she has started producing nodes she will need watering every-time the substrate is dry. This will encourage root growth. Make sure you are adding Calmag every watering at half recommended dose as coco lacks the calcium that soil has naturally. PH between 5.6-6.1 is good for autos, 6.1 better for flowering stage. I hope this helps, good luck and happy growing