I do no subscribe to the “cannot be done in min hours” argument. I accept it cannot be done in min hours at 1 hour a week. If the min is 45 hours it is hard for an ordinary working person to do an intensive course without risking divorce. 25 hours is however achievable in 9 days (five days holiday and two weekends). If this approach is used it would be possible to get down to min hours.
I did both the night and the IMCR in min hours using a similar idea.
Rod1