Part of the process is to break down and rebuild. As you advance you will likely encounter these stages where things seem to be going backwards. This is often worst at the transition towards shodan. This is where the training is turned around. As a lower rank we learn for this or that attack we do this or that defense. As we advance we learn for a given attack maybe we can do a range of defenses.
And also that the individual techniques contain a lot more nuances than were discussed in the beginner classes. Ikkyo appears on every test, but ikkyo on a shodan test should not look like ikkyo on a 6th kyu test.