I can’t believe its almost a year since the RS Oph eruption!
An MNRAS pre-print on the “Study of 2021 outburst of the recurrent nova RS Ophiuchi: Photoionization and morpho-kinematic modelling”, on ArXiv today, presents the evolution of the optical spectra of the eruption, includes amateur spectroscopy and photometry: https://arxiv.org/abs/2207.10473