@MyNameIsntHarper After trying to go back to the world I was using before, things only returned to normal after one sim day and eventually all problems came back. I'll try to test it in another world to see what happens for a longer period of time. (My original test was only one sim day long). However, I've realized that part of the problem comes from my sim sleeping! If the need is yellow while they sleep, it'll stay yellow even after the need is filled.
There is a positive though, my needs will sometimes turn yellow which is a step in the right direction, but that's only *sometimes*. This though, also leads to some issues as the need will continue to stay yellow when it should be in the orange or red range.