Woodward is an experienced investigative reporter, so when he co-authors a book, the odds are statements like this are believable...
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Just eight days after the 2020 election, then-President Donald Trump was so determined to end the war in Afghanistan during his presidency that he secretly signed a memo to withdraw all troops by January 15, 2021, according to a new book, “Peril,” from journalists Bob Woodward and Robert Costa.
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Given that Trump essentially shutdown the issuance of Special Visas way back in 2017 that would facilitate refugee status for Afghanis upon a U.S. exit, I'm pretty sure that his sudden order to leave just before he left office was meant to involve ONLY U.S. personnel...even May 1st would have been a debacle...not the way we treated ARVN members and others who fought beside our troops. Biden, et al, worked exceptionally hard to make sure such despicable treatment did not happen...hence, the protracted exit allowing over 120,000 Afghanis to reach safety...oh, and he arranged for other nations to take Afghan refugees as well.
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Link: https://www.cnn.com/2021/09/14/politics/woodward-costa-book-trump-afghanistan-memo