My plan for this winter is to polarize the C2 training and do strictly endurance on the bike with some tempo spurts during Zwift group rides.
Planing a 4 month C2 training program this winter. My version of polarization (3 Zone model) this year will be Z1 for the first month. Z1 (80%) and low Z2 (20%) in the second month. Z1 (80%) and high Z2 (20%) in the third month and finally Z1 (90%) and Z3/VO2max (10%) the final month with little to no taper. Bike training will be secondary.
I thought the Peter Pan got too intense too quickly the one year I tried it.