Top panel: spectral decomposition of the He I absorption at high resolution in the 2020 epoch. Middle panel: same as for the 2021 epoch. Bottom panel: same as for the 2022 epoch. In the bottom panel, the masks applied to the narrow absorption features mounted on top of the broad He I trough (grey bands) are shown. In all panels, both the emission level normalised to the pseudo-continuum model and the zero-velocity position (dashed black lines) are indicated, and the total absorption model (dashed red line) is plotted along with the single absorption components (dot-dashed lines).