Volume went down quite a bit if both plans were 4 days/wk and it was 128 minutes a day and now is 100 minutes per day.
We could compare this as Avg Stress / Daily divided by Avg Minutes Daily:
128 / 99 = 1.29
100 / 75 = 1.33
Intensity has actually slightly gone up by a few percent.
If you were thriving at 128 minutes per day then you may want more volume.
You’ve had a big FTP increase. How are you finding the workouts, are they feeling like the “right” amount of effort?
Also, not sure if you want to go down the rabbit hole or not, but Seiler has a good video on Stress, Strain, and Load.
The TL:DR is:
Dave