get yourself a timer...cheep they are ...
Timers - click this
keep the lights on their own personal timer
note - revegging - stop listening to all these naysayers. I have revegged my recent / last grow of Acapulco Gold, Grand Daddy Purple and Bubba Kush ...they did take a while, like 3 to 4 weeks transition where I went from late flower / harvest to veg state. A couple weeks of funky where the leaves look MUTATED, then normal growth. With proper care and trimming, they are going to outproduce their previous harvest. And then I took some clones from them while they were in veg state. Transplanting works wonders becasue the root ball is so large from the original grow. Remember the saying - the larger the root, the larger the fruit...just gotta get the nutes back in there
I put my revegs in with my autos at 20/4....a perfected schedule. I believe plants need rest, that is why no 24/0 schedules. After 50 years, I think maybe I learned something