I imagine you can “Repair/Change” the current installation.
As far as I have seen, all settings are maintained by upgrading your installation, so nothing will “be lost” in that manner.
Even if you try to install new installation despite Studio already installed on your machine, Studio setup will detect it and upgrade the Studio to the version you are trying to install.
So don’t worry, just install it. If exists, studio will be upgraded else Studio will be installed.