Moving Multisite Subdirectory Installation to Root Directory

I have searched and read many form posts and guides to move my multisite installation to its directory. I seem to be halfway there, but am having some trouble knowing what database entries to edit.

One of my secondary sites, njcaregivers.org/frn seems to be working fine. My main site, however, njcaregivers.org, shows an error connecting to the database.

The site was previously installed at njcaregivers.org/wordpress. I edited wp-config.php and .htaccess file to remove this directory. I also changed the directories through the wp-admin screen for each site (from njcaregivers.org/wordpress/frn to njcaregivers.org/frn). I couldn’t however change this directly for the primary site because that field was greyed out.

When searching my database through phpmyadmin, the results show 0 entries including njcaregivers.org/wordpress. Searching for only njcaregivers.org, I find several references to njcaregivers.org/blog/ which I’m unsure if it is something that should stay or go.

If anyone can guide as to what exactly I should be changing in the database, or if I am totally off base somewhere else, I would greatly appreciate it. Thank you so much!