Documents shrinking when printing multiple per page

Hi, I wonder if anyone can help me with an issue I've only just started having with adobe acrobat. I've been creating documents (8x15cm) then combining 4 and printing to one sheet with no issues or shrinkage to the document size. I have recently updated my phone to IOS 17 and not have the issue that when I set to print to one page (same size of documents) there shrinking to half the size. I have tried e writhing and can't get this to stop. I'm using the IOS app and have logged in online to try and fix it with no success. Please help!