Move from Wp to Drupal without downtime If I have wordpress right now with a bit of content (on a linux VPS with apache) and I want to switch over to drupal with the least possible downtime what do you recommend? Is it possible to install drupal separately and then put the content in it and then make it active over the wordpress somehow? Sorry if this was a silly thought as I don't have experience with any of this.
Based on what you've mentioned, you will want to install drupal 7 separately and try Wordpress Migrate.

https://www.drupal.org/project/wordpress_migrate

It only needs the export of Wordpress which can be done in the Wordpress admin.

You will want to try this out first on your own machine, Acquia Dev Desktop will work for you. Read through some of the docs and walkthroughs on the migration. I've done it a few times, it's very quick and typically works fine.

https://www.acquia.com/products-services/dev-desktop

Once you are setup and established, you can migrate to Drupal 8.2.x-8.3.x without much trouble.