Maybe a great time for a mid season break! Especially if you have been at it all year long. If not you could repeat a week similar to the last week of the 18 week sweet spot plan, then a regeneration week before you start your next plan. Either way you are going to need to take an easy week.
After that you can do some easy zone 2 rides for 4 - 5 days the following week to open back up before you start your 6 weeks to cross. You