No dice if you want to do it from within a Studio binary itself (e.g. with a plugin), as far as I know. You cannot break down an instance into XML from within Roblox itself so ultimately you will need to either do this by hand or look for a third party tool that allows you to push a Roblox binary file and generate XML data from it.
If you’re open to alternative suggestions, I think remodel is the tool for you. It’s not an in-house tool and it’s not the best if you want to upload new assets rather than overwrite existing assets but its a CLI tool that allows you to read Studio binary files and manipulate them. A couple of Git repositories use this to publish a library version of a resource upon pushing a commit to the master branch.