Just put em back outside. they won't get near the light intensity needed for hard nugs if left up to a window to provide light...very bad idea!

Mine have been outside since May and they're now flowering all by themselves. budding is usually visable by aug 1st for most strains, mid-august for the rest...but showing sex is always much earlier. They are usually sexually mature at around 6-8 weeks (an excellent sign of maturity is when "alternating branching" is well underway) and most will show sex by then.