Hα line profile variability and temporal evolution in 2021. Left: Nightly averaged SALT spectra of J1109 acquired in 2021, normalised to the continuum flux and restricted to the wavelength range encompassing the Hα line (highlighted by a dashed red vertical line). The dates when these spectra were obtained are indicated within each respective panel. Prominent variability in the line profile can be seen. Right: Time evolution of the parameters that characterise the Hα line profile. The insets show a zoom onto the values measured on 2021 April 10 (in most cases here, the size of the marker is larger than the error bars).