Recommended cvt fluid for your car must be cvt fe. Check your cvt fluid filler port nut for confirmation, i guess it's cvt fe. Don't perform such experiments unless until you have a problem where thicker fluid like kixx cvtfe becomes a need. You will end up ruining a perfectly working transmission.
Fyi: CVT fluids of Toyota are blended by ExxonMobil if you have second thoughts.
Go to any good mechanic, drain by opening drain nut and inner filler tube, measure and add same quantity back. Repeat after driving a km if you have extra fluid.
In the end, it's a fluid not an oil so two different things.