Purple Jack (Purple Kush x Jack Herer)

Growth seems to have slowed down. It still appears to be a healthy plant however. Buds are not really plumping in my opinion. Not sure if me switching it from 12/12 to 24 did anything. I do see new leaves growing towards the bottom. I don't know much about autos, I was told they were super easy but idk. Next time I'm definitely not going to start it in 12/12. Just didn't have a choice this time, as I only have one grow space which had flowering plants already in progress at 12/12 when I was gifted this auto and she was already a week into sprout so I had to stick her at that schedule. Imma keep an eye on her. Any suggestions to help her along are welcomed.