the best way I did it for many pups was to not do it so rigidly but using points in the day, i.e. when they wake up, before they eat, after they eat, etc. that way you don't become obsessed with it then get stressed which then has an effect on the pup who then may have a greater issue with toliet training because an owner is stressed (just like some kids can get if parents become obsessed over similar subject). In the evening as it got later and if I was tired on occasion they did pee or poop in the house (I never paper train either in kitchen or in the crate) but hey what's the big deal if they do - they got there in the same time if I was stressing about it or not.
Just because so and so does it in record time shouldn't matter one iota - all dogs are different. Most of mine were easyish, Stella never was but then she just took longer and because it was winter and because she squats so low her bum was practically on floor to pee as she hated the wet weather then she'd pee in the kitchen where it was warmer (she doesn't any longer).
The more you chill the more you'll have a chilled pup and adult dog