Sure - I use
https://lightpdf.com/pdf-to-word but there are several out there. I found this one to do the best job for me.
Choose the PDF file, it will covert it into a Word file (DOCX). Once it's done, click the down arrow button to save the Word file on your computer, and then you can edit it as you like. You could do the same with something like LibreOffice of course, I just happen to have Word installed.
For editing in Word, I apply a template with my preferred font, larger size for the country name and slightly fancier border. Also put the Scott # in the stamp box. The Steiner pages are extremely convenient, but I really don't like the font they use by default. I also sometimes split up a page, as I find the Steiner ones sometimes crowd too much on a page, or conversely, I remove a stamp box for one I'm never going to get.