Bayesian blocks of the Fermi-LAT and UVOT (filter "uvv") light curves are shown. The gray vertical lines approximately mark the high-emission states corresponding to the inferred period of ≈2.1 years, while the orange vertical lines approximately indicate the Swift monitoring campaign carried out to track the predicted high states. The figure highlights the near-coincidence of the γ-ray high-emission phase with a similar state observed in UV.