Process takin time

I have a multisite setup and I ran this script for one of my site that site has almost 17000 posts. I have run the script and after 12 hours it’s showing only 17% complete. Is there any way to speed up this process?

This script I used with my actual domain names.
vip @my-site.develop — wp convert-to-blocks start –url=https://mydomain.com/my-site/