Hight

Is there any possible way to keep plants short. Short all they way to the time of flowering and then harvest.

You can prune or top them (google topping). Or you can tie the plants down to the ground, the plant will learn, and start growing short and bushy.

there are additives you can add to stop verticlte growth. Humbolt county has bush master, or stacker, or there is another product called DR. Nodes

you just need to find a hydro shop that has these