I currently coach at the Division 1 level (NCAA bubble team) and hopefully can give some answers.
Prior to coming on to this program, the team slowly cranked up mileage over the summer, went through a period in-season where they went "up week" and then "down week" to account for racing, with a progressive drop in mileage about 4 weeks out until by the end of the 4th week (conference champs) you are at about 50%.
This was not getting good results and many athletes felt strong in September and tanked October into November. I am not a big fan of sharp drops in mileage whether it comes on progressively or not. Especially if it too far out from target races. My experiences as an athlete and witnessing other coach's protocols for their teams have left me the impression that it makes you generally stale.
So, what I did instead when I got on staff was do a slow summer build up to stay healthy and STAY in high mileage the whole season. We did have down weeks and they typically went 3 weeks UP, 1 week DOWN, with some athletes going 2 UP, 1 Down.
We went to 80% of your mileage the week before conference, and then 70% of your mileage the week of conference. Back to 80% the week after that, and then back down to 70% for regionals. If we have NCAA individual qualifying or team qualifying I still do 70% again.
So yeah. It is not a big taper and when it does happen you have a bump up in between the two meets you are preparing for. You have to come to grips with the fact that all other races don't matter in our sport and you train through them even if you are tired. If you can balance that with recovery, the pay-off come championship time is huge.
Honestly, I think tapering doesn't really help THAT much. There isn't so much you can do at that point to get faster but there is a lot you can do to f**k everything up by changing things too drastically and making yourself stale. That's why we push through most of the season....to stay consistent.