Hey! Thanks for the kind words.
It sounds like you need to convert the PDF into a booklet format. Some PDF software gives you the option to print as booklet.
Alternatively you can try this tool: https://momijizukamori.github.io/bookbinder-js/?sigFormat=booklet&customSigLengt... making sure the signature format is set to 'booklet' and making sure to specify whether the printer type is duplex or single-sided.
I just gave it a go and it seems to output correctly. You would fold all the sheets in half and staple through the middle.
Let me know how you get on!