Hello,
MS Word doesn't allow updating cross-references and other fields automatically in the main body (only headers and footers allow this). These fields must be updated manually:
https://support.office.com/en-us/article/update-fields-7339a049-cb0d-4d5a-8679-97c20c643d4e
https://www.techwalla.com/articles/how-do-i-update-all-cross-references-at-once-in-word
Maybe you could use a macro.
Regards.