Hi Anastasia
I'm no experienced faster like the others you've mentioned but I thought I'd just give you a few of my thoughts. I think 40 days would be too ling for your weight and height. I think you should just start fasting and take it one day at a time until you get to where you want. Also, regarding the SWF..yuck lol I used to do that a few years ago when I started my fasting journey at the age of 21. I will never do it again. What I do now is drink 2 glasses of prune juice the night before and in the morning it flushes you out. Try that maybe it'll help.