I Did mine after 4.5 hrs at 18 years old in 1980.

I know this is quite unusual but I had a nut for a CFI. It was in the days when we had to do spinning. He would take us up to about 4000 feet and we would spin down to 2000 before we recovered!!!! Anyway I’m still here to tell the tale. As I recall it was one of the best landings I’ve ever made