New Grower 1st grow update and a question.

[nsb1970]

I'm 18 days into my first grow of autoflowering Bubblelicious. Growing in coco with a little perlite mixed in. Im watering about every three days when the pots get light with water i've adjusted the ph on and 1/4 strength Flora Nova Grow. Are they old enough to bump up the Fertilizer strength? And should I be feeding them every time I water. I will put up a pic or two to look at. Would appreciate any and all advice. Thanks, Norm