Increasing light from 11/13 to 12/12 messes with flowering?

If you are in late flower and have lowered to 11/13 to try to finish a sativa and you also have indicas and hybrids under the same light, once you harvest the sativa, will it mess with the remaining plants' flowering metabolism if you increase the lighting back up to 12/12? Or should you leave it at 11/13 to their finish?

IMO i find 11/13 better over 12/12.

Rarely have had to push a finish on a strain by running 10/14 ( longer dark period ) mimicking longer “ winter “.