I am doing my asics plan for my first 10k event early June. I have done 10k distance early this year in 64 minutes a few times. The plan suggests 57 minutes for my event. Initially the plan had me doing slow 6 milers and i felt fine with this. The plan then started speeding up over shorter distances and based on my times adjusted to a faster prediction. I am spending quite a few runs doing faster shorter distances and am worried that I won't be able to do the 10k distance. The tapering is also just in the last 6 days, is that usual?