Very cool work, and I dig that you decided to use the fever for your source of inspiration and chose to work around it as well. Normally I would say the same thing about cleaning up the mix, however in some ways I feel like the muddiness and heavy distortion in the mid and lower frequencies really adds to the uncomfortable, heavy, and disorienting feeling that comes with fever. So if that's your intention, maybe you can still lean into it a bit. At the end of the day, it entirely depends on your artistic intention. Nice stuff!