How much water and water w spray bottle still?

if i was you i would stop your spraying right about now. autos can start to flower right around the 4th-6th week mark. when i water i go by weight of the pot. so after you water and get a small amount of run off pick the pot up, remember the weight of the pot with the plant. this weight should be right all the way until harvest. this way you do not over water and you are checking your plants daily. it usually works out to watering every few days here and there to every other day. so you got a pat on the back for not wanting to over water. your plant though the bigger it gets the more it will want to drink, the biggest part of not wanting to over water is anytime before 3-4 weeks so your seedling can develop roots, around 3-4 weeks your roots are developed and look like a big net, they are a small sub way statin looking for moisture. so after you water, pick pot up remember weight, let be after for 3 days check pot. happy harvest