I've no doubt that you can do it - you've done so well as it is already! I have actually felt 'great-ish' today, and drinking the water I am finding really easy.
I think that the longest I've lasted on a VLCD is about 7 weeks, so I've got quite a few days to go until I beat that. I know that the key to this whole diet is how you come off it, regardless of at what weight, and that's my biggest focus this time.
Even if I feel like I'm waning a few weeks in, I'll add sensible food, while still consuming shakes, a little at a time. That way, I shouldn't put on too much, and it will inspire me to get right back. However, right now, I've never wanted to lose weight like I do at the moment, so I'm looking forward to going the whole hog and watching the pounds just melt away!