Bad news: I've overreached. I'm not sure if it's functional or non-functional, but I've had 2-3 rides with pisspoor numbers. I'm not overtrained, but my body is definitely throwing a fit on the bike. I assume it's due to that bigass ride I did (wasn't on the training plan) and the fact that I had to repeat a few weeks to make my taper work for BWR. I'll be taking some days off with a light week of Z1-Z2 stuff to come correct.
Good News: I caught this early before I do my usual "just ride through it and explode into a nebula of fatigue and hatred for bikes." Additionally, if it's functional overreaching, that sets me up perfectly to ramp for BWR.