Yep! If you add more, you’ll probably need more broth. Similarly, if you add less, reduce the amount of broth. For example: if you use ½ cup orzo, I’d reduce the broth by about 1-2 cups. (You can always add more broth, but don’t add too much until you know you need it. I like to keep a measuring cup of extra broth on the counter by the stove in case I need it. If I don’t use it, I freeze it for later use.)