NICER observation list: Target ID 863001

XTE J1810-197 is the first discovered radio-loud magnetar. It underwent its second outburst at the end of 2018 when its soft X-ray flux increased by over 2 orders of magnitude driven by the appearance of new hot spots on the surface. Four years later, the source has not yet reached quiescence, showing a hard X-ray flux that is a factor 2 larger. Moreover, the source pulsed fraction and pulse time-of-arrival has shown remarkable variability in the past 5.5 years. We propose 2, 30 ks observations of this historic source to follow-up its very late-time spectral and temporal properties as it decays back to quiescence.