For the first couple of times, you should set aside 30-90 minutes and do all the steps in full, on paper.
After that, you can do much faster five-minute or five-second versions.
I think you can usually manage to boot up the conflict even when you're not in the moment; most (i.e. literally more than half) participants at CFAR workshops had nonzero success doing IDC just ... right then, when we taught it and told them to.
Moved it to its chronological position within the workshop schedule, which should help with that. Thanks.