Congrats on your progress thus far... pretty smooth overall it seems :).
Regarding the swollen Lymph glands have you been doing anything to keep the lymphs moving? I always make a point of (and would recommend to anybody) doing a couple minutes of gentle trampolining 2 or more times throughout the day (as gentle as necessary, even if it means keeping your toes from leaving the canvass).
I too believe that fasting will ultimately help you to gain weight by enhancing your body's ability to assimilate nutrients. Funny thing fasting. It can help us to accomplish whatever we want including the ultimate gain or loss of weight.
All the best to you. Did i once read that you are intending to stop at 10 days? Seems you are drinking only to thirst and this thirst has been demanding about 2 liters per day on average? Hard to even imagine going dry for any period of time when this is the case but out of curiousity do you have any interest in the possibility of engaging in any dry segments? When i first became interested in this, i started out doing about 15-20 hours per day and then drinking to thirst (about 1.5 litre usually) in the remaining window. Overall i must say i believe it was a positive development : ).