When can I start nutrients and take off 24hrs light

You can leave them on 24 hour light if you want. They will veg faster. Not sure why people are still saying cannabis plants need dark. It's been proven they dont.

Go to 18/6 asap, all plants NEED sleep to finish their photosynthesis cycle and to have a correctly functioning metabolism. A plant with an incorrectly functioning metabolism is likely to do weird things. Growing at 24/0 is a big, big, big mistake in my book, no matter the age or reason! Don't worry about feeding them yet, they need to be transplanted asap, any longer in those tiny cups and you will stunt them. The small one will be just fine, each plant has unique genetics and will grow to its own "program", even if they are all the same strain. If you are growing in soil, they will not need feeding for 2-3 weeks after being transplanted. Transplant asap, the roots will already be getting crowded. Hope this helps, Organoman.

You should never give your plant 24h of light but 20/4 18/6 or 16/8, google "circadian rythm in plant lifecycle" if you want the details. Like other said it's about time to transplant them in bigger pots, depending if you use an enriched or poor soil time to start feeding may vary, i personnally use an enriched soil and start feeding lightly the 4th week of vegetation. And true one is smaller but it's still in an acceptable range, nothing to worry about. Happy growing.

I would transplant them into bigger pots now. The soil will carry them another 3-6 weeks with nutrients depending on brand. So maybe start the feed in 2-3 weeks after the transplant

Hey men, te recomiendo hacer un transplante a un macetero mas grande y definitivo. Y ya en un macetero mas grande podrías empezar con los nutrientes de vegetación en dosis mínimas para empezar Luego podrías aplicar alguna técnica sino, puedes cambiar 12-12 de ser cepas fotodependientes. Con respecto a la altura la puedes controlar con alguna poda apical y LST sino no hay problema solo que será un poco mas pequeña! Vas super bien. Vas super bien! Suerte con tu cultivo! Espero ver esos cogollos super grandes.