In reply to your pic, I think she looks great, looks like your fren did a lil over watering but not too bad.
A lil TLC and time to dry up a bit she'll be back on track. Did you put any rocks at the bottom of the pot? If it's 100%
soil then that would be why the yellowing is a coring. It's sucking up the water that it let out. If you have rocks in it then just get back on your schedule.
All in all I wouldn't worry... I'm just thinkN that, that is gna be a fat ass cola! Can't wait to see the pics in flower.
That's also a new pot too, well it looks new. Is that a 5gal? looks like a 6", what's the Diameter of your pot? You may wna Transplant.
If the Dia of your pot is only 6" then go get a 12" Dia pot. Have 2" of rocks at the bottom first before the soil. Remember that you want
The roots to get as big as they can, bigger the foundation the bigger the yield. So what I'm getting at by that is that you wna have the
base of the trunk as high as you can so make sure that your pot is full of soil, just put rocks in the bottom, so she don't suck up old nasty water.
She'll get huge, looks like she has a fat ass trunk now.