Mine went 15-18 weeks. Autos are weird like that, and I hate scheduling my room around them. Last year I had seedsman white widows take 5-6 MONTHS and world of seeds NLxBB auto (great crop) take 5 months as well. https://imgur.com/a/bg6g2

Mine went 14 weeks and went into flower around 5 weeks in. Very slow development in the buds door an auto, I do believe that was on me due to conditions etc. Try giving her a nudge into flower cutting light down or 24hr of dark possibly(not 100% on the 24hr dark but I've heard of a few people doing it) . Don't worry by the looks of her now she's gonna be a beast, mine stretched over double her size through flower so if it's the same with you she's gonna come out well.

I think 24 hours of light is really too much even for an auto Do not forget that auto are crossed with fem, so maybe this gene has taken over ... idk The other growers are right, but I think you should just change the cycle for 18h Firstly and and watch what happens,just a little night everyday, will maybe trigger the flo 👍 Good luck my friends

It may not come into bloom for lack of darkness, try lowering the cycle to 12/12 until it flourishes as it should, and then you can raise the hours of light if you think it’s convenient. It looks beautiful like this, entering flowering and maturing, it will be a beast! Good luck with that, friend :)

This is the first fast buds seed I've seen that has not flowered by week 6 , it's possible switching to 12/12 might help, are you 100% it's an auto ?

I have had a few autos not flip without help. I’d throw it into a flower tent to get it to flower