I'm new to this, and have certainly gotten it seriously wrong at least once, but I think the best approach is to listen to what your body is telling you. On the days you feel good, do what you can. BUT - make sure you leave a large reserve of energy/acetylcholine. I recently had a really bad day, but was still somewhat active. I ended up in the ER having difficulty breathing. If I have another day where I feel like that, I'm going to rest as much as I possibly can. If you become completely sedentary, that is going to be detrimental to your overall health.