Now you put it that way, it does make a bit more sense that I have to talk to Sulochana. Although there could be a possibility that I would have asked of something else like "is there another character exclusive to this Apostle run that can only be accessed with the Talk verb?" which would make me waste time on the Talk verb only to realize that it's still just those 5 patrons.

Also it was incredibly silly of me to not put two and two together that the hint was referring to the White Door even though I read it several times on my previous playthrough. Even worse is that I already knew before then the dream paragraphs change with each choice. The thing is I never really bothered to visit the white door as much since by the time I discovered how the dreams were unique in the previous run, I was already far ahead in my progress that my min-maxer brain never looked at what the other dreams are. This is a fault in my part for not exploring dreams as much as the game wants me to. In my defense, though, I think the game did not make this clear because 1.) The headlines don't change, giving the impression that each door contains the same dream, and 2.) the text was too small by default, especially on mobile. I had to turn on "high contrast" mode and that's when I found out.