@Smoochie you might find this thread useful https://forums.j-novel.club/topic/534/expiring-volumes-light-novels/401
It lists which volumes are going to expire each month and lets you schedule what to prioritize reading. Keep in mind it's manually updated so there might be errors but usually they are corrected as soon as someone notices.
@Jon-Mitchell the data is already publicly available both in the release calendar and in each series page on the website so there is no problem on that front.