Hmm… I’ve never done any re-feeding, like I said, so I’m not expert, but if you have been doing well with everything (rest, sleep, etc.) after 1.5 years I would personally try tweaking stuff! That’s a long time of doing something perfectly to have something so messed up with your health.
Are you pretty intuitive about what you choose to eat, when you rest, etc. I can see re-feeding (again, no expert) as being a good thing for a while, just to get you off the diet track, but I’m personally a fan of mostly whole foods, mostly organic, intuitive eating, intuitive rest/exercise/drinking, and not bugging out if you make a “bad” choice.