Yes, you could just use the NextCloud migration tool.
Log into the ownCloud server via SSH
Go to the folder where ownCloud is installed. That is typically something like
Use the following command to download the migration script:
- Then put it in the updater folder:
mv index.php.1 updater/index.php
*. Now go to the URL of your ownCloud server in a browser and log in. Then append to the URL this: updater/index.php so it looks like:
*. Then you can just follow the steps
For more information check out the official NextCloud documentation here:
Hope that this helps!