Place your video/audio on the timeline. You don't need a fine cut, but remove long silent gaps—silence confuses speaker detection.
"Stop manually typing captions. Here’s how to get Adobe’s Speech to Text in Premiere Pro 2023 for free." Adobe Speech to Text for Premiere Pro 2023 Free...
This is 100% free forever and often more accurate than Adobe. Place your video/audio on the timeline
Here is the official and unofficial (but legal) way to use Adobe Speech to Text without paying a dime in 2023. Adobe Speech to Text for Premiere Pro 2023 Free...