Antonyms for the phrase "putting through the mill" could include "pampering," "babying," or "spoon-feeding," all of which suggest a sense of ease, care, and protection rather than the rigor, challenge, and demandingness that are implied by the original phrase. Other antonyms could include "letting off the hook," "avoiding," or "ignoring," suggesting a lack of accountability, responsibility, or engagement with the task at hand. Ultimately, the use of antonyms for "putting through the mill" depends on the context, tone, and purpose of the communication, as well as the speaker's values, beliefs, and goals.