I did the Tony Ferguson Diet too, I lost 2.5kg in the first week, then went up then pretty much lost a kilo a week, however I stopped after 3 weeks. becuase I too was very hungry and I had some side effects, I had headaches, and felt hungry most of the time. I did not like the soups, so only had the shakes, and I was starting to think that living off shakes is not a good thing.
I have only started on this forum, but since joining, I have cut out potatos, junk food, reduced the amount of coffees i have per day and I have lost 2 kilos.
Tony Ferguson was good, but just did not suit me, so I say give it a go, what works for some, does not work for others.
Let me know how you go with TF