Interfacing with Low-Voltage ICM-20948 IMU chip
For I2C bus level translation, you can't simply use resistors. You need a FET based translator or a chip that basically does the same, to allow translation between 3.3V and 1.8V devices, and pull-ups on each side to the respective supplies. You also need a 1.8V regulator to power the 1.8V VDDIO. You might as well use the 1.8V for the VDD too. Regulator can be powered from 3.3V.