from what i've been thinking from reading quotations of ramakrishna, sadhguru, and other sages is that once enlightenment happens you leave the body. not to say it is impossible, but takes a certain type of sadhana prior ro realization to prepare oneself for maintaining the body. or some other method must be employed: constantly creating a conscious desire, not cutting ones hair along with wearing certain metals.
“Then one reaches the seventh plane, the thousand-petalled lotus. When the kundalini reaches there, samadhi comes about. The Existence-Knowledge-Bliss Absolute Shiva resides at the sahasrara. Here He unites with Shakti – it is the union of Shiva and Shakti. “When the mind reaches the sahasrara, one becomes absorbed in samadhi. In this state all awareness of the external disappears, and the person cannot preserve his body. If milk is poured into his mouth, it runs out.- ramakrishna