offline voice recognition module communication with DFrobot MP3 Voice prompter

I am running the voice recognition module (SKU:SEN0539-EN ) with I2C communication to my micropython board with a Raspberry Pi Pico microcontroller.  How can I send command outputs from voice recognition commands to my DFrobot MP3 Voice prompter that is communicating with my Raspberry Pi Pico via UART on the same board? I would prefer not to set the voice recognition module to UART mode.