I done my C+E over the weekend, but it was still a four day course.
4 hours Sat, Sun, Mon, & Tue morning with a 1 hour drive and test on the Wednesday.
I am unsure that 8 hour training days are available as i dd not ask the provider I went with, but for me personally that would be too much to do in one day.
I was knackered after the four hours, taking in what the instructor was saying, concentrating on the road, taking as much information in as possible etc, I never realised it would be so tiring.
All the best.