Plants seem to be staying small and bushy (pics)

Hi guys

First time grower and i just want to get a gauge on how my plants are doing.

Environment; fluctuating between 72-85 degrees, but mostly staying at an ideal temp. 40-60% humidity. Normal potting soil with about 40% perlite.
Age; Northern lights 3 weeks since poking out from the soil, transplanted once with no issues. Purple cheese are 2 weeks since poking up.
Strand; Northern Lights, Purple Cheese. Fem, Auto
Lighting; medium 300W LED hung 2 feet away on a 18/6 cycle.

They were a little over watered as you can see by the older leave down the bottom (curled and yellowed, I pruned the first frilled leaves as they had completely died and wanted to experiment with early lollipoping.) but they have since been fixed and the new growth is very vibrant green and seems to be stable. I'm just a bit worried because they seem to be growing a bit slow for autos. i have not added any nuets yet out of fear that I will give them nuet burn being so small.

Advice is greatly appreciated.

I aint a expert but it looks like its lacking deficiencies, so what are you feeding the plant and dont say nothing, personally i make up a solution, remember to ph test your water, i aim at 5.8 on my ph pen but i m useing coco 50% and Perlite 50%. Anyway make up solution of Plant magic root stimulant, cal-mag+ and a smal amount of your base nutes. Grab a bottle of Superthrive and do injections along side the stem. Put your light closer aswell i have 600w hps 20inches front the plant. i hope this works for you.

also seach for plant leave problems, you can pin point exactly whats missing

I have one that is 3 weeks and about the same growth. I'd take pics with regular lighting to get the best response.

Sent from my SAMSUNG-SM-N900A using Rollitup mobile app

That plant is too young to call "bushy". Give it a couple weeks.