Can anyone ID these worrisome spots on Hoya Obovata?

October 1, 2019

I got this hoya from a nursery about 2.5 weeks ago. It's showing dark coloration on several leaves and small dark dots on a few stems. It seems to have happened very quickly. I have only watered 1x and the soil was completely dry when I did. The roots looked healthy when I potted it after bringing home, but this sure does look like root rot? Botrytis?

Should I cut off these few leaves? Any other remedies? Would hate to lose it.

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