AsNoriuanswered grow question 3 years ago It's a stunt and very weak girl, doubt you will have even 10 g of her.
Would not waste time on her.
Don't touch plants like this, they don't live it.
Don't train plant, learn just to grow full cycle first.
Try to start to feed them from week 4. Buy normal preloaded soil, I use BioBizz, used foxfarm and others with same success.
Follow good pH !!!!!!!!!!!!!!!!
Any plant will be 30-40 g minimum if you follow simple steps, later you can learn new and unknown techniques for you.
Throw out all sick and yellow plants, saw you have many .
Control humidity, you need 70 in veg, but your newest two plants look okeish, just overstretched.
Buy good light ;)))
All the best !