I’ve not tried this myself but there is a private demon’s souls server that rotates the world tendency. You have to change your PS3 DNS but that seems pretty harmless from a PS3. I wouldn’t do it on my PC but I would try on my PS3. The last time I played a few years ago I was trying to manipulate the WT but in my normal Souls fashion I got distracted farming and then something else shiny caught my eye and I wandered away.
It’s sad I own all the games, multi platforms and versions have put a shitton of time into demon’s and dark 1 & 2 yet I’ve never finished any. I’m super close on my remastered playthrough, just Seath left I think.