I would follow option 1 if you can do some sort of light/moderate exercise (doesn’t have to be on the bike) during your vacation that would be even better. Depending on the volume and your body it will be a blessing in disguise to shed accumulated fatigue. If you feel flat when you come back you could consider extending the 2nd half of build and the first week back do easier versions of the prescribed workouts so you get back in the swing of things
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