It's not that hard. You can do this retrofit in a couple of hours.
You need to disable 477 and enable 475 in EIS, and also make TPM available in ECU list of EIS, and also activate TPM menu in IC.
After that you can write new TPMS sensor IDs (which are written on the sensors) via Xentry if the sensors are OEM.
If you plan to use third party sensors like Autle etc., you will also need a TPMS learning tool. In this case, you can either write the old ECU IDs (by reading them via Xentry, DTS Monaco or a special tool) to the new sensors, or generate random ECU IDs for the sensors and perform an OBD relearn using a TPMS learning tool.