I will be overworking Fable until the 7th, and am glad to have everyones advice here - I made great strides when I asked Fable how to lower my usage for one of my ICMs. Dropped the tokens by 10x from one of my initial runs to my final run.
I also use the /usage command to get a preview of what the cost for the session would be. I like the answer in the image - it was the fruit of creating .md files in my resources directory so that the ICM did not go-fish every run.
I am thinking of adding $200 in usage credits so I don't stop using Fable all together.