When should I change the light schedule?

Hi… I have no idea what I’m doing. Could you please tell me if these plants are ready to change light to 12/12?? This is my first time growing. Also should I feed the plants a product of nutrients?


Couple questions: how long in veg? You can keep in veg for quite a while but from looks I’d switch to flower as they’ll have a growth spurt when you switch & you don’t want to run outta room. Have you considered LST to control height? After a couple months i then switched to 12/12. I started using nutes after 5th set of leaves appeared but only qtr of suggested amount. My total growth time approx 4-5 months with photos.