This is impossible to generalize which is why there probably aren’t any threads about it.
You will need to talk to the potential employer about this as every firm is run differently and your project requirements vary.
We often talk about ebb and flow in the design professions.
However, I would say based on my experience, expect to commit a lot more time than you thought or is contractually required. Especially in consulting, you are being asked to turn on a dime and put in the extra hours if the project and client need it… and they always need it!
Can you tell us more about what area you are looking at and what kind of consulting work your firms of interest are doing?