well I would say your fine... pistils start to pop out at about 2 weeks into 12/12. by about the 5th week of 12/12 you will see your budding sites well and pistils everywhere and your main cola starting to fatten. by your 7-8th week you buds should be nicely swollen and lotsa trichs all over. At that time you keep your Eyes on it. Dont always think that things should be done in 8 weeks as strains are different. Also... dont count your weeks of flowering till you see those pistils coming out.
looking forward to seeing your progress.