Hey harley.....
Before I begin, I've gotta tell ya, I'm no expert in growing, nor diagnosing, our plant we adore so much....
With that being said.....
It looks like your sugar leaves are getting burnt?
With the bottom picture, the top right side that's brown, it could become budrot?
From what I've done in the past, it looks like heavy nute usage?
And I'm not a believer in not flushing...
So , don't forget to read my disclaimer,

, I personally would chop it.
But I also run more than a couple plants at a time, in 1 gallon plastic grow bags, which in turn allows me to lose some if push comes to shove...
On the other hand, when shit goes south, if I think I could learn something from trying to nurture it back, I'll give it a lil bit to see if I can help or hurt it.......
Kinda like these that I f-ed up with by either a spray or my goofed out-of-order nute mix.....
Hope you get it figured out!!
Maybe if you haven't yet, you could drop some more seeds to get prepped for the next go-round....