Cooler night time temps

I have two Sweet Cindy photos growing in 5 gal. pots outdoors. They are about 2 weeks into flower. As fall moves in Temps are getting down to low 40’s F. at night. My question is should I be bringing these girls indoors either at night or transition to indoor tent? Plants look good and seem to be tolerating the cooler night Temps. Daytime Temps are still in the 80’s.

Any suggestions?