Set the items without database to 2340 as per PDF page count. this can be fount in the menu Edit -> Preferences, Program settings.

create All layers and from the Layout/Edit condition Menu...

Layer 1 - Divider - expression = IF(RECORD_NR() =1,Print,Skip)
Layer 2 - Pages 0001 - 0300 - expression = IF(RECORD_NR() >= 1 AND RECORD_NR()<= 300, Print,Skip)
Layer 3 - Divider - expression = IF(RECORD_NR() =300,Print,Skip)
Layer 4 - Divider - expression = IF(RECORD_NR() =300,Print,Skip)
Layer 5 - Pages 0301 - 0600 - expression = IF(RECORD_NR() >= 301 AND RECORD_NR()<= 600, Print,Skip)
Layer 6 - Divider - expression = IF(RECORD_NR() =600,Print,Skip)
Layer 7 - Divider - expression = IF(RECORD_NR() =600,Print,Skip)
Layer 8 - Pages 0601 - 0900 - expression = IF(RECORD_NR() >= 601 AND RECORD_NR()<= 900, Print,Skip)
... Continue until all pages accounted for.

On all the Layout's with 'pages xxxx-xxxx', you'll need to edit the page number expression, by right clicking on PDF in main view, selecting Edit Expression -> property 'Page Number' and setting the page number to RECORD_NR().

Once this has been setup, you can utilise over and over again just replacing each layout with the new PDF and altering the items without database to the final page quantity.

hope that helps.

Cheers