well done !! you've done really well, I'm doing my second fast after a couple of false starts from tomorrow, the last one only lasted 4 days and I found that I held on to my weight and got discouraged as I only lost about 2-3lbs in that many days, plus I had a horrible sweet taste in my mouth all the time and wanted to chew to get rid of it.I was also lethargic but it was my first time and I was so proud that I'd done it.
I'll also incorporate more movement into my day too as you advised.Take care.