Hannah, some people here track everything. Others track nothing…and then I’m sure there are some in between.
Given your history, I’d say you’re better off NOT tracking. I don’t track and I think I’m better off that way. When I weigh or try to track, then I’m trying to “force” the weight off when what I really need to do is focus on living my life and enjoying it.
So yes, listen to your body. As long as you feel that you’re making some kind of progress toward your goals (and they can be anything, from less painful knees, to fitting into your cute dresses, a reduction in your orthorexia, etc, so NOT all related to weight/size), you’re on the right track. Then, when you’re ready to try something a bit different, you can tweak how much fat you’re eating, or cut out dairy for a while, etc…just to see how it makes YOU FEEL.
I consider fasting one of those tweaks. Now, if you’re not eating because you’re not hungry, go for it! But if you’re fasting as a control mechanism or some other borderline not so healthy reason, maybe just wait a while? I regularly go 16-18 hrs without eating but that’s because I’m not hungry. As soon as I think about “intentionally” fasting, it tends to make me think in extremes (Ooooh, I could fast 7 days and lose more weight! Well, why not fast 10 then!), so while I can tell I’m still losing, even if slowly, it’s better mentally to keep fasting in the “tool box” for later use.