It’s good that you are aware of it and try working on it. I find myself too unintentionally doing it every now and then. When I was first told about it, I would have what I want to say in my head. Word for word. Even if just the first sentence and would stick with it now matter how bad my stutter got. I said what I intended to say. At first it was hard as you would imagine but with time it became an automatic reflex to stick by my words and work on making those words more fluent rather than finding similar words on the spot. Thanks for the name too. I never knew it was called circumlocution.