Like it was told , the leaves are pointing down when the sun/light is off and will pointing up when the sun/ligh is on so it's natural as they are not abble to do the photosynthesis so they are resting.
If it's a photo like we said then the flowering process is on the way , the 1st step is a nice grow during 2 weeks , then 2nd step is the pland loading pistols and forming buds ans last step will be the buds fattening.
To know if it's really a photo yo need to wait 2 weeks , if you switch back to 18/6 she'll reveg if it's a photo and she'll continue to flo if it's an auto , but keep the same idea to be sure of what kind of weeed it is ( 2 weeks of 12/12 then you will see changes )
Sorry for my other growmie but there are a lot of autos that are not autoflowering , it is due to the fact that you'll never find a "in breed line" with an auto as autos are not braught higgher than F3 ( in 90% of the seedbanks ) , the reason is thay a F7 could be less charged in THC than a F3 , F3 is the 3rd generation and from what I know about breeding 7 genes are necessary to really keep the genetics traits that is interesting with the strain ans in our case we are talking about the auto genes , so after 3 generation the genes is present ( the F2 is the generation in which you'll have 1/3 autos , 1/3 photos an 1/3 fast flowering ( yes it is how they are breeding the Fast flowering strain that are not automatic )