I went from 60 miles this spring to 100 miles two weeks ago without riding at all through the week. I hardly have the time.

I run perhaps twice a week (see training log). I did perhaps 4-6 rides of 60 miles since March, and a few 30-40 milers in between. I upped it once to 120K, then went the full monty the next week. depending on terrain, ymmv. This is my third season riding and I can ride 4 out of 6 days in a training camp, but not in real life.

Take a week off, you are killing yourself. When's the event?

Recovery rides should be flat, high cadence, HR not over 120, maybe an hour. I prefer a swim or a very slow jog not over 30 minutes.