The current consumption drops in stages and the minimum is achieved after about 20 minutes of everything that is under the driver's control being switched off.
I did extensive testing on my CDT about 2 years ago and published the results on here. You should be able to search and find my post. It gives time vs actual current readings which were in accordance with the spec.
In fact, here you go.
https://the75andztclub.co.uk/forum/s....php?p=2901137