No.
While the Adventist Church loves to label all of Ellen White’s failed prophecies either still future or conditional, this is not the case.
Some of the more notable ones include the Shut Door of Mercy, claiming to be shown by God the day and hour of Christ’s return multiple different times (such as the February 15, 1846 Day-Star vision), the Chicago Building Vision, that the sun went black on May 19, 1780, and that the stars fell from Heaven on November 13, 1833 supposedly fulfilling Revelation 6:12-13 and Matthew 24:29. For an exhaustive breakdown on this topic, watch our stream dedicated to it.
Ellen White claimed that “whatever contradicts God’s Word, we can be sure proceeds from Satan”, that her writings never contradict God’s Word, and they bear the test of investigation. We’ll let you connect the dots.