Change long workout for short one indoors

Hello, I’m on the last weeks of the 18 Weeks of Sweet Spot - Advanced (12-16+ hours/week), this weekend I have long workouts but due to the current situation I can’t go outside so I was wondering what should I do instead on the trainer.

Also I have only two weeks left on the training plan. Which plan should I do next if I don’t have any events planned? I want to keep improving my FTP or at least maintaining it.

Thanks!

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You could do Zwift’s Uber Pretzel!

Afterwards choose an interval plan for the type of event you’ll be competing in: road intervals, mtb intervals, time trial, hill climb, etc…