Account Requesting 1 page Invoice via Advanced PDF/HTML Invoice Template

Hello -

The invoice template the account I am working with uses prints as two pages, whether there is one item purchased or multiple items purchased - The invoice is always generating as 2 pages even when the second page contains no additional data other than the header and footer. Is there a way to suppress the second page when it is unnecessary?

Disclaimer: I do not write code, on any level. I know how to access the code associated with the templates, but don't read or write code myself, so if a possible solution includes adjustments to code (which I suspect it would), please feel free to dumb it down to kindergarten level comprehension. Example: "Copy and paste this .... in between <tr/> and nbsp at bottom of existing code"