Advice please

She's very lanky, but healthy. What are you using for nutrients? I'd recommend three additional products. Silicon, not in the form of foiler spray and dose it to a higher strength. And flower fuel bloom booster. It's a purple can. In my experience this will make her break out in bud sites all over, and bump up the buds. I personally think it's amazing. I stack this with my third suggestion, Bud Candy. Make sure she gets some good light in the day time. You're going to have to tie up the branches either way when she really starts to flower. Next time try super cropping her before flower. Keep learning! Great job!😁

U might want to add some bamboo stakes to support those thinner branches. Also adding silica into her feed can swell the branches cells and fatten those branches up. Northern lights is known stretcher so dont knock yourself for the stretch and lank. Very common for her outdoors. All in all she looks a nice healthy green. Transitioning well into flower. Keep it up and keep learning.

Is it getting at least 8 hrs of direct light? Looks really lanky. But I've never grown that strain. Keep it up thou! Learn from this grow to improve the next. Happy Growing!👊