MarkLogic: Timeout for processing document to add properties

MarkLogic: 9.8.0

We around 20M of data and now we need to add additional data into document properties.

So we have setup scheduler & below code will be executed

let $Log := xdmp:log("[ Project ][ Scheduler ][ Start ][ ======================== Insert Records Scheduler Start ======================== ]")

for $author in (/author][not(property::root/contributors)])[1 to 500]

let $uri           := $author/base-uri()
let $auth_element  := if ($author/aug)
                      then
                           for $auth in $author/aug/pname
                               let $snm := $auth/snm/text()
                               let $fnm := fn:concat(fn:string-join(for $i in $auth/fnm return $i,' '),'')
                               return
                                     <pname type='author'>{fn:normalize-space(fn:concat($snm,' ',$fnm))}</pname>
                      else if ($author/editg)
                      then
                           for $auth in $author/pname
                               let $snm := $auth/snm/text()
                               let $fnm := fn:concat(fn:string-join(for $i in $auth/fnm return $i,' '),'')
                               return
                                     <pname type='editor'>{fn:normalize-space(fn:concat($snm,' ',$fnm))}</pname>
                      else ()
let $XmlDoc := <root><contributors>{$auth_element}</contributors></root>             
        
return try{
            xdmp:document-add-properties($uri,$XmlDoc),
            xdmp:log("[ InspecDirect ][ Scheduler ][ End ][ ======================== Insert Records Scheduler End ======================== ]")
            }
       catch($e){xdmp:log($e)}

When we change from [1 to 500] to [1 to 10000] we are getting timeout error here. And if we will go with 500 then it will take weeks to finish it.

Can you please let me know if this approach is fine?