[Iwillgetby]

2 minutes is probably long enough. I did notice that google drive doesn't seem to like it if you upload a lot of files. I have had files sit and never get OCR, but I forgot about them so they may have OCR on them now.

Also, I am not aware of a signal when it is done.

[Ididntdothis]

You got to love modern software. It may do it or not. It may do it within an unknowable timeframe. But if it does it, it’s wonderful.