I don’t know how NVC pulls these numbers but here is what they sent my congressman.
As of APR-2024, the NVC is scheduling IV interview appointments for the U.S. Embassy or Consulate in MANILA, PHILIPPINES for Immediate Relative applicants that were documentarily complete on or before MAY-2023.
I suppose this follows the theory that was posited here a few months back. Back in September, they told him that they were scheduling for 6-2021. And in January they said 1-2023. The numbers are moving closer together… hopefully that trend continues