The American Association for Variable Star Observations (AAVSO) may be a useful source for info about T CrB.
https://www.aavso.org/news/t-crb-pre-eruption-dip
Announcement from last year by Brad Schaefer (Louisiana State University) and AAVSO. Taken from the paper by Schaefer (2023) et al. available at:-
https://arxiv.org/pdf/2303.04933
https://www.aavso.org/t-crb-time-sen...s-forum-thread
The forum thread for T CrB - most recent posting 5 June 2024.
Hope this helps.
I suspect that T CrB will go nova in its own time, but the present interest due to the pre-eruption dip in brightness is tantalising, but may require a longer timebase than what we would want to endure :-)
Regards
Tony Barry
Western Sydney Amateur Astronomy Group (WSAAG)