18/6 to 18/6

My lights go off at 2am and come back on at 8am can I change this to go off at 8am and come on at 2pm with out affecting my ladies my room is blacked out so there will be no issues with light. I'm 3rd week in veg

Yes

Yes, you can light 24/7 in veg with no problem, just don't give them more than 6 hours of darkness. To adjust your schedule, instead of turning off at 2 am, leave the lights on until 8 am for one night, then turn off at 2 pm from then on.

In flower, the reverse is true - you can give them 24 hours of dark with no problem, just don't give them more than 12 hours of light per day.