Interesting article in the Wall Street Journal (paywalled so archived)
Solo Extremists Might Pose Higher Risk Than Organized Groups
It quotes the leaders of those groups, and also message board debates over whether to demonstrate or not. I've seen similar myself. Nick Fuentes of the more political America First has issued a video saying there won't be large scale events and urging people not to attend. Of course many of these organised groups are dealing with the consequences of the social media and internet service provider bannings, as well as facing federal investigations.
No idea what will happen Wednesday except it will be nothing like the 6th at the Capitol. There you had the full range of Trumpists, populists and Republicans, the far right (both political and militias) and Qanon, plus people for whom it was just Glasto for cunts. In the fall out from what was, by any measure, a pretty disastrously unsuccessful event, many of these factions are pointing the finger at one another as much as at the 'enemy'. Some are going to be wary of who they demonstrate with in future. And many, whether out of prudence, tactics or reevaluation, will be wary of demonstrating at all.