I'm feeling the Dark Souls fatigue

I'm currently in NG+3 on the way to Blighttown. I died because I tried to jump to the platform with the Iaito treasure and fell to my death (I managed to do it in NG, NG+, and NG+2), and I respawned back to the Firelink bonfire. I'm feeling the Dark Souls fatigue. I also feel like I don't progress enough to satisfy my progression "hunger" (37 VIT, 50 ATT, 61 END, 28 STR, 44 INT, 30 FTH). My mega-plan was to go to NG+6 and get to 40/50 for all the aforementioned stats). My plan in NG+3 was to increase VIT to 50.

For some reason, the fatigue is not limited to Dark Souls 1. I don't feel like I want to play my next Souls game, which is Dark Souls 3, as well. I feel that the difference might not be massive enough to not trigger my fatigue, and I don't know if the difference is even for the better or for the worse. I heard that the Poise system wasn't as good in 3 as 1. I also don't feel like wanting to continue another of my playthrough, which is a DEX/FTH playthrough with a Great Scythe (because this sub recommended me that). I'm using the Great Club in my NG+3 playthrough, so maybe I'm just a little tired of slow weapons.

What to do? Can I remove the fatigue? Currently, I'm planning to play Kingdom Hearts.