Well done!
I think there’s a lot of psychology in many of the workouts, it’s not just as easy as saying “that’s got an IF of 0.92, etc.” or whatever. We’ll all find some workouts or classes of workouts hard depending on our weaknesses but that’s partly the point of them.
You can’t look at how other people view individual workouts either - about fifteen months ago there were a lot of posts about how hard Mary Austin and variations were. That was a bit worrying as it was in my schedule for a few week’s time. When I eventually did it I thought it was tough but nowhere near the hardest workout I’d done to then.
Obviously dropping the intensity by 10-15% is going to change the whole point of the workout but adjusting the intensity, by small amounts, isn’t a problem if it lets you complete the workout. 98% of something is better than 100% of nothing.