NSDR / Yoga Nidra
RecommendsToolkit suggests NSDR or Yoga Nidra to fall back asleep after night waking
Huberman's Sleep Toolkit recommends non-sleep deep rest or yoga nidra protocols, and in his Fitness Toolkit episode he points listeners to his own 10-minute NSDR script.
Source: Toolkit for Sleep (newsletter, 20 Sept 2021)