The blog-like offering was launched in early May.
"From the Desk of Donald J. Trump" no longer appears on his website and was only live for less than a month.
Miller told CNBC that the blog had been "just auxiliary" to broader efforts at rebuilding Trump's social media presence, though he said he did "not have a precise awareness of timing" on those plans.
But an NBC News analysis found that Trump's blog had a much smaller audience than his Twitter and Facebook accounts and that there was little engagement with the posts. "We'll have additional information coming on that front in the very near future".
FILE - President Donald Trump's Twitter feed is photographed on an Apple iPad in New York, June 27, 2019.
Trump once drew tens of millions of social media followers, with multiple pronouncements nearly daily when he was president.
Links to entries from donaldjtrump.com/desk display a 404 error, and the link to the main "desk" page shows an entry form to sign up for emails and text messages from Trump's campaign.
"This is meant to be a temporary way of getting my thoughts and ideas out to the public without the Fake News spin, but the website is not a 'platform, '" according to Trump's statement. That ruling, which was a clear punt back to Facebook's executives, suggested that the suspension was justified after Trump's incitement of the January 6 riot, however the board panel said that the company needed to have a clear policy for permanent bans, and/or it could not permanently ban someone in this way.
Later, Miller responded to a question on Twitter about whether the blog was a "precursor" to Trump joining another social media platform.