Thank you for your thought on the project and also the Tough Tops recommendation.Hi and welcome!
We did our replacement fabric ourselves, and it takes a little time, but with three people doing/helping the process along with some basic tools and a couple of step ladders, it's easy enough. Take a look at Tough Tops Awnings website. At the top of their site is "DIY videos" that show just how to do it and what you'll need.
Tough Top Awnings | High Quality RV Replacement Awning Fabric