think of it as fall as you slowly head into winter solstice you actually gain more darkness and as spring approaches you gain more light ) you are only imatating this sequence indoori like to run less light an more darkness in my later part of flowering usually week 6 i start and go to 11 1/2 hrs light 12 /1/2 off week 7 11 hrs of light 13 off then once i determined shes ready i turn off lights for 72 hrs then chop maintaining 60 degree room temp hope this helps ya