Multi-mission X-ray+UV light curves during the SSS phase. UV data with UVM2 filter (2120 ± 500Å) were taken with Swift UVOT (ObsID ranges 00045788033–00045788053 and 00011558001–00011558021) and XMM-Newton OM (UV) and X-ray data over the energy range ~0.3−10 keV with AstroSat SXT (ObsIDs 9000003142 and 9000003160), Swift XRT, NICER (ObsIDs 2200810104 on day 18.3 and 2200810106 on day 21.3), and the MOS2 light curve extracted from our new XMM-Newton observation (see legend). The XMM-Newton MOS2 and OM UVM2 light curves were taken between two Swift observations but overlap with five AstroSat SXT observations. The high time resolution of the XMM-Newton observation demonstrates the high degree of variability in X-rays on timescales shorter than the Earth occultation gaps between Swift and AstroSat observations. Meanwhile, in the UV, a slow declining trend can be seen that is consistent in the Swift UVOT and XMM-Newton OM data (see Sect. 2 for discussion).