I totally hear you about missing fruit my friend! For me, I do the refeed once every 2 or 3 weeks. The triggers for me are a harder time sleeping, struggling at work outs, and overall lethargy.

There are rules to the refeed, though. I keep protein consistent no matter what I'm eating, but on a refeed day carbs go way up and fat goes way down. You basically live the exact opposite diet that you have been. Hope that helps, feel free to ask any more questions.