AsNoriuanswered grow question 3 years ago I have currently 10 autos running, and one of Northern Lights went absolute midget, you just can bum into small pheno and nothing you can do...
I doubt I would achieve such low canopy even if I trained her well ;)))
Now on your girl, when she is smaller, she needs less nutes. Overdose stops height development even more, be lighter and more gentle with her.
All the Best !