Sadly, doesn't work if you're running BnP / RSV:
To make RSV ignore a follower/NPC do this:
Look up the NPC/follower you want to ignore in SSEEdit (I think there are other ways to check this but that's how I learned).
On the left panel, click on its FormID to expand and then expand Non-Player Character (Actor). There will be 3 columns, the FormID, the EditorID (the one you need) and in the last column will be their NPC name.
Copy their EditorID and add it to the RSV_DISTR.ini file on this line (Follow the example, separating with "," and not spaces):
Keyword = RSVignore|NONE|AAA_SweeneyFollower,_VK_2B_Follower,0,XtudoCybeleFollower
Save it and you're good to go!
Note: If your characters are bugged out after this, spawn them in by disabling them in console and follow up with player.placeatme formID 1 to respawn and with refreshed look.