adb shell

sm list-disks

Example answer: disk:179,64

sm partition <DISK> mixed <PERCENT>

Example: sm partition disk:179,64 mixed 25

Where 25 this 25% for SD Card, remaining 75% for Internal storage

https://xdaforums.com/t/tool-utility-win-linux-auto-formatting-sdcard-to-internal-and-sdcard-storage.3583875