First time grow, how do I increase these yields ?

My first grow is in a 2’x2’x5’ tent.
I’m growing 3 different Autoflowers.
Seedsman Blueberry (back left) and Dutch Passion Night Queen (on the right) are 29 days since sprout. The blueberry showed it’s first hairs July 6th and I just saw 2-3 tiny tiny hairs on the Night Queen 2 days ago. The plant in the front is wos Neville Haze and it’s 3 weeks old today.
My light is a spider farmer sf1000.
3 gallon fiber pots with bottom 1/3 of FoxFarm OF and the top 2/3 FFHF mixed with perlite.
I’m watering with FF trio nutrients, 6.2-6.3 pH. Watering on elevated pots with a 20% run off into saucers that I empty out.
The I been trying to low stress train and the blueberry has been responding pretty well, but I feel like I should’ve done better though. I’m nervous to trim much off. I don’t think Im going to yield much...I have no clue tho. I’m new to autoflowers. The night queen has always been weird since it sprouted.. with mutated leaves and short bushy growth. It’s been difficult to train. The nodes are so close that the leaves are on top of each other and the side branching is growing out very slowly. I’m nervous to trim her as it’s an auto and I don’t want to stress her too much. I just started training the Neville haze last week and she’s responding well.
I’d appreciate any tips or comments, thank you guys.

Looks like you've got some heat or light stress going on. Whats the temps? Distance of lights? Dial that in first or you'll end up with barely anything

Not a soil grower so can't help but but that night queen is heavy Indica. It's supposed to be short and stocky. It's a fuckin tremendous smoke too. Reeeaaalllyy heavy, couch melt, purple trails from your hands kinda smoke.
Wicked gear

If yield is what you are after then running auto flowers is probably going to hold you back. Not that auto flowers don’t produce. I’ve seen pics online of autos yielding over half a pound, but you’ve really got to have everything dialed in to get there.

With photo period plants you can mess up a lot during veg an still grow a big plant prior to switching it flower. Yield is about having a big healthy plant allowed to flower to maturity.