I started a whole thread on exactly this. Bottom line, AT led to pretty much a wasted summer of training for me. The plan was not intense enough at the start and it took to long to get up to the right level.
I was training for a trip to the Alps which didn’t happen due to C-19 and I’m glad it didn’t because I felt under prepared.
It will come right eventually, but you’ll have to wait a while for AT to get to know you, but in the meantime it’s not actually that great.