What if we go five months?The most recent pictures we had were from late March, which is fairly recent and not exactly "a long time".
https://www.sinodefenceforum.com/type-002-cv-18-carrier-news-discussions.t8048/page-265#post-547534
Going two or three months without updated pictures of that location would actually be fairly normal tbh. If we go six months without an update then that would be different