Do nothing. Best if you read the Phoenix Protocol and also Dr. Filonov’s books. They will help a lot. Just as important is the refeeding, especially after a dry fast.
Dry fast means no food or water or anything. Your body will adapt.
A few things you can do are take showers and go on walks.
Showers can provide some water absorption through the skin. Take cool or warm showers, not hot. You don’t want to sweat.
Walking is important because it keeps the lymph system moving to help clear out toxins so they don’t build up.