Ulisse Munari et al. have published a pretty comprehensive analysis of T CrB’s accretion history in this Astronomy & Astrophysics preprint:
https://arxiv.org/abs/2507.23323
They point out that its superactive phase from 2015 to 2023 was actually not quite as active as the equivalent phase that preceded the 1946 eruption. They note that the increased accretion since May 2024 is making up for this deficit.