Probably any day now it will start budding. You have it plenty of room for rooting so she been building a strong foundation. I'm not actually experiences with that tho, if I remember correctly my northern lights auto went maybe 5 or 6 weeks to start budding. The it ran long like maybe 8 more weeks. If I remember correctly the leaves were sativaish thin looking. So you're probably looking at 13 weeks total. Maybe a little longer for good measure. Looking good bro. Relax.