Looking ahead Next crop

You could pull it off but I don't think it's worth the hassel. I would find or make a new grow space and move them into the other tent when you wanna flip to flower. The real issue though is that it's not gonna do you any good unless you make this a normal routine. You'll be doing this same thing every grow to fill the space... You're better off finishing up and starting anew after.

Should be fine, just a bit complicated. You would have to take the new seedlings out before 10 am/lights out, then put them in the tent around 4pm and make sure your flowering plants did not get any light on them. You can not, for example,, take the new seedlings out at noon, you would need to keep the new seedlings under a continuous 18 hours of light, they can not get 12 hours, a couple hours of sleep then another 6 hours of light. This would be 2 separate light cycles in one 24 hour period.

I would wait till you get ready to harvest or pull plants from growing area. Start germination few days before. So as you get a sprout you can then give it the space from harvested one, and turn lights on longer. As long as you don't need the dark tent to dry of course. Would be how I would transition. Would also use warmth of the room from lights for germination. Good luck and happy growing 🌱

Do you have a dark ventilated place to dry your buds? If not you will need your tent to dry as well. If you have a dark room then you could. The switching of light types might mess with it. Also you could bring in pests and infest your current plant.

I'd finish flowering, try opening up the plants up more space for air flow and better light penetration. Start your seeds elsewhere dont put them straight on a 12hr schedule. Keep them on 18hr until they mature 3wk or so.Your other will be almost done... Happy days🤞😉