How can I configure my iPad so that it doesn't stop uploads after getting auto-locked?

I'm trying to upload a file to Google Drive and SendAnywhere, which would take over an hour. However, I cannot disable auto-lock on my iPad (iPadOS 13) (the maximum auto-lock period is 15 minutes), and whenever the iPad gets locked, uploads are stopped. How can I configure my iPad so that it doesn't stop uploads after getting auto-locked?

Unfortunately there's no setting like that to configure.

You can ensure that your iPad is not set to Low Power Mode (check in Settings > Battery).

Besides that, the rest is up to the app developer.

Run another app that will prevent sleep.

SatNav apps would be good for this.

Make sure you've got enough power, of course, or are plugged in.