Light shedule for AK47

Im new to this but i've built me a single DWC system with flourecent lights (3200 lumens) at 3" from sprout and im 6 days in (8 if counting germ) about 2"+ tall and im not too sure what my light scedule should be, im running 20-4. The seed is AK47 but I don't know if it is auto-flowering or not.

18/6 light schedule works best in my opinion

When I go into flowering should I goto 12-12? I keep reading about auto-flowering but im not sure about the specific AK47 it is.

yes for flowering it`s 12/12

Cool, Thank you