Last year I took 4 months off and have a similar story. The TR SSB 1&2 plans work at increasing FTP over 12 weeks, I’ve used them for two seasons (2018 and 2019). Or I can do more hours/week with less SS work and more zone2 work, and both increase FTP and build a bigger aerobic base. Lets call that “more pyramidal” base plan. For me, the bigger aerobic base makes any work above FTP much easier and more productive than the base I receive from SSB MV. I’ve done the “more pyramidal” approach in 2017 and 2020.