Check that leaf underside for pests and watch for that to spread. Kinda looks like you may have gotten it wet. It appears to be very localized and the plant looks good otherwise. Great in fact.
Just like a first kid. Baby proofing the house and shit. Second one, baby proof gone and you’re just pointing out the dangerous stuff. Third one, good luck kid.
Many opinions on this.
I like to clear the bottom most branches/leaves, but how far up depends on the size of the plant. I typically cut clones from the bottom nodes. I’m on the “minimal defoliation” bandwagon.
And I’m currently dealing with Autos so I’m afraid to stress them out. And trying to clone them is a waste of time . I’ll do a little light defol. You will hear my screams and tears from where ever you are.
You may want to start taking out some of that inner growth. I know it is painfully scary but a lot of that interior stuff will not develop anyways.
P.S. That is a nice looking baby cola in 1st pic.