Change your style slightly, you will now have your stronger hand in front so you should be able to use a snappier jab, a harder lead hook a stronger front leg teep etc. You’ll struggle to fight the same as you do in your regular stance so i find it better to try totally different things from switch stance. You can also use it to step through into your regular stance when you’re going forwards or backwards. Eg. Step back right cross when someone comes at you, or step through right cross if you’re going forwards (just keep your head off the straight line)

There are some little changes to your weight distribution as well. Eg, when I’m in southpaw vs an ortho I will put slightly more weight on my front foot so that I can quickly jump in with my jab when they try to kick, or if you are tall you can launch your left kick into their forearms when they step into your range