Hello,
Don’t do it in the middle of a project. There most likely will be some issues with plugins, utilities, or other things you’ll regret if you upgrade when busy. Also be sure to arrange for the installer then wipe the drive. You never want to install an OS on top of another if the machine is used for production. Start over, you’ll be happier. Check all your plugins for OS compatibility updates and only install what you’re currently using.
Hugh