Everyone needs an off season, cross train lightly (no biking) for a week or 2 and you will come back fresh.
At 6'2" and 150lb you could be in a long term caloric deficit situation. As bad as it might sound you should consider attempting to gain just 4-5 pounds to give your body a taste of caloric excess. That amount of weight gain would be easy to remove by someone like yourself when you return to riding.
Listening to your body is something everyone needs to learn/do.