I’m having a similar issue with my “garden of green” Girl Scout Cookies. 8/9 weeks in and 3 out of 4 are flowering nicely the other one hasn’t even started yet. This is my first time growing seeds from “GoG” so maybe they’ve got breeding issues. I normally grow with “crop king seeds” and have never had this happen. I plan to keep waiting then and if it hasn’t started flowering by the time the others are done I’ll flip the light 12/12 for a bit and see if it switches then put her outside I guess.