Here's my typical CV progression. It will give you an idea of how he prescribes rest:
week 1: 6x1k (90-sec jogging rest), 6x200 @ 1600 pace (200 jogs)
week 2: 6x1k (75-sec jogging rest), 6x200 @ 1600 pace (200 jogs)
week 3: 6x1k (60-sec jogging rest), 6x200 @ 1600 pace (200 jogs)
week 4: 6x1k -1sec (60-sec jogging rest), 6x200 @ 1600 pace (200 jogs)
week 5: 6x1k -2sec (60-sec jogging rest), 6x200 @ 1600 pace (200 jogs)
week 6: 6x1k -3sec (60-sec jogging rest), 6x200 @ 1600 pace (200 jogs)
at this point there are several things you can do.
1. Run a race or VO2max time trial (2 miles all out with a negative split) and reassess your CV time. Start progression over with newly assigned paces/times.
2. Add another rep. You can start progression over, but when I add a new rep I don't revert back to 90 second rest—I usually start w/ 60-sec rest. (add another rep to the 200s as well)
Another approach is to do 4x1mile at CV. Follow the same progression as above. And you can do a week of 2000, 1600, 1000, 800, and 600 at CV. It all adds up to roughly the same volume.
For the rest, I usually jog. 60-seconds is not enough time to fully recover, which is part of the point. However, I don't mind stopping for a drink every few reps while the clock is still running.
Hope this helps.