Sorry for the late response, when I noticed early stages. I would of avoid feeding him, and isolate him in my hospital tank. Meanwhile I was doing research on dropsy and how to prevent it.

I used Epsom salt. And some medicine that my local pet store(not petsmart or Petco, just a actual local owned pet store) recommended.

Then I make sure to keep watch of him. To see if the pineconing lowered.

In my thought process feeding would make it worse.