A.
Thanks for posting on the forums.
Both options are reasonable, but I have a third option I expect will work best.
Start your Maintenance phase now, cut your losses, and take a couple of week easy. Could be the formal 80/20 Maintenance plan (~7-8 hours a week), or, just a couple of weeks of 2-4 hours a week. Let your body reset, build a recovery firewall. Then, start the Level 3 plan again, as you’ll be about 20 weeks out from August 27.
Yes, your volume will be lower than what you were doing in Week 10, and it might feel like a step backwards. But, the thing about fitness is that it can’t build indefinitely. Inevitably, you have to reset just a bit. Use the lower-volume part of the first 10 weeks of the plan to destroy those intervals, aim for the upper end of all zones, and you’ll gain new base speed as a result of the reset which will propel you into the more endurance-focused specific phase of the second half of the plan.
David