Downloading Workouts into Zwift

I’ve completed Build Me Up and would like to do certain workouts within the training program after completion. While there are some individual workouts I can download and then upload as .two file, there are others I cannot. Rather than saying “download” it states “available in Zwift”. Yes it is but only if one chooses to sign up for the entire 12 week training program. Is there a workaround someone can share with me? I greatly appreciate it!

I guess it can’t be done only because no one has responded. Still keeping fingers crossed.