Are you sure your doc will give it to you? Once you say you are doing ww I would imagine you will be left to it!
My worst diet was CD, it was a fab diet, lost the weight really quickly, but managed to mess up my head for over 2 years. I lost 3 stone in 3 months, and now am heavier than I was when I started CD.....I think it works for some people but the amount of people who struggle through it, stopping, restarting and VLCD being the ONLY way they can lose weight is madness.....I am soooo glad I am out of that loop now!
I think ww is great, I have only lost 8.5 since the beginning of Jan and it really is a drop in the ocean, but I am enjoying it and I am enjoying the exercise I have taken up, which hopefully will do me good in the long run!