Nobody knows where their own PFT is, never mind anyone else's, so I won't speculate on that. I will do what I do best though, and ask you lots of questions (your profile doesn't tell me much) - some of which might help inform some of your feedback.
Having lost your 20kg (very well done on that, in itself), where does that place your BMI?
In terms of body shape, both at outset and now, did or do you carry any weight around your middle?
Why are you finishing the ND at 8 weeks? Have you considered going on longer, as you say you still have weight to lose?
How do you intend to tackle eating/diet once you finish the ND?
I'll probably ask more questions when I read your answers, if that's OK.