The training peaks guys lean towards periodized over polarized. I also think polarized is a bit silly and quite misleading when touted as a good solution for a lot of people.

In any case, as mentioned, periodized just works. Start with tempo for 3-4 weeks and work on increasing the duration with maybe 1-2 vo2 max workouts every other week, then move to another 3-4 week block focusing on sweetspot and ftp (again, maybe a vo2 max workout every other week), then moving on 3-4 weeks of vo2 or shorter, sub 1 minute efforts where you're trying to increase the amount of reps you can do, etc.

It's nice, relatively simple, and saves the really heavy intensity for when you're ready to really start bashing the pedals the hardest.