Under developed bud growth issue? HELP!!

So I thought I was doing a good job thinking one of the tops was huge, I recently checked it and it’s a couple crammed up bud sites.

it’s an auto strain. I accidentally snapped the little one. Would you guys cut them off, defoliate, or?

it’s the one one the left

I’d say your still doing really good. Whether it’s a bud or a few buds it’s still fat like a elephants chub. Better yet, a elephant chub that gets you blazed, hell ya on that!

the underdeveloped plants unable to uptake as well as its sisters probably because of some anomalies at the root zone, pest or maybe light related. If you were to run some ph/ppm/ec, bug, and or light tests on all of them, looking for variations and using the elephant chub root zone as your control, you could possibly identify the issue and make the right changes. you could defoliate some lower growth or any leaves covering bud sites, would help

What are you feeding them? You definitely need to do some thinning of that canopy, I can barely tell what I'm looking at there.