Determining schedule

I'm currently doing a straight 12/12 cycle from seedling. I have a couple of different plants on the go. Hymalayan Gold(HG) and The Pure (P). I finished off one grow and these two were planted the last couple weeks of that grow. P is at 31 days now and showed to be a girl around day 28. HG was a feminized seed and has yet to produce flowers at day 22. I'm using an adv nutes mix to feed them. I did give P a shot of bud blood a couple of weeks ago and have yet given one to HG. Next time I will give HG a shot of that. My nute knowledge is still pretty small. The P has wilted a bit but seems to still be growing strong. Each plant also has a bottle with a mix to create CO2. The only thing I'm missing is knowledge of the plants. I've never grown these strains before, haven't really grown much of anything before.

I'm curious to know other grower's experiences with these strains and also grower's experiences with a straight 12/12 cycle.

People who have grown The Pure before, how long did it take to produce flowers when changed to a 12/12 cycle. And the same question for people who have grown Hymalayan Gold, how long until it produced flowers after change over.

Anyone experienced with a straight 12/12 light cycle? It seemed a little long to take four weeks to show sex but I've never done a straight 12/12 cycle before. I'm guessing I should give the plant a couple of extra weaks expectation to plan my nuting schedule.

Any help would be appreciated
Thanks