Hi! If you made release notes for your book, its status should have automatically changed to "traveling", so it won't show under a "TBR" search. If you didn't make release notes you can do that now - controlled if you gave it to somebody, wild if you left it somewhere. You could also just change the book's status to "traveling" manually - if you view the book's page you should see the set of status codes, and can click on the "TRAV" one.
[I see you've released a lot of books, so you probably already knew the above. If your question was about a specific book that hasn't changed status as expected, you could post a link to it and that might help show what's going on.]