I should say, it is always helpful if you do a search first. Most questions have been asked many many times as @PK1 said. In the process of reading the search answers, you learn a lot more than just the one answer. It is a valuable and productive way to use the forum.
I agree completely and have been but sometimes itβs a situation where you want to ask about whatβs going on with a plant in real time before thIngs go south
Thanks for the advice
Some answers, hopefully. But I'm a newbie too, so...
Top more, and train them as well. I would top each plant at least 3 times. That alone should turn one cola into 8. By low stress training them to spread a lot, you get bigger colas and let the secondary ones develop too. Try to do your trimming before flowering.
A trellis screen will help, partly by separating the colas, partly by supporting them when they get heavy.
I also have a HLG 600R. Currently running at 100% power, 27 inches above canopy and putting 900 PAR in the center, 700 some at the corners. I kept PAR at 400 the first few weeks, then 600, then more as they flipped to flower a week ago.