Can we ask for any feelings of hunger, thirst, fatigue, drowsiness, physical pain or discomfort, etc., be acted on as triggers for healing sessions to be done by the higher selves with the LHP and DSMR protocols?

This is perfectly appropriate. As physical beings, why would it not be meaningful and of great benefit to couple negative physical sensations as well as negative emotions to be triggers for healing by the higher self, to use that as an opportunity to bring more positive healing benefit for the welfare of the being. So this would be a further way to have many more healing sessions with both the LHP and DSMR protocols to be launched across time if this is requested.