Can you change your light period time?

[40rounds]

So, I think I jacked up...I originally choose 12noon to 12mid as my light period but now want to change it to 9am to like 9pm because I realize that I am missing out on precious daylight I picked 12n because I don't usually get up until 11ish, lol. So my question is could I change it or is it too late? I'm in flowering day 17.

[Campesino]

Always maintain 12 hour darkness. You can reduce the lights on period to move the period time, but I would advise doing it slowly.

1. 12-12 Dark 12-1130 Light
2. 1130-1130 Dark 1130-11 Light
3. 11-11 Dark 11-1030 Light
4. 1030-1030 Dark 1030-10 Light
5. 10-10 Dark 10-930 Light
6. 930-930 Dark and Light thereafter