Well done Moo it's a fabulous feeling, isn't it! 
Lots of comments on full fat & calories.
I totally agree with Not2b - keep your calories as close to 800 as possible, less than that will cause you issues, with this diet, less is not more if you see what I mean!! Also water & steps do make a difference, my pedometer arrived this morning, suspect it might tell a rather sorry tale....
With Full-Fat, the BSD site is adamant about using FF products, especially yoghurt. I posted before on this (lost in mists of time..) the 'natural' level of fat in yoghurt is between 5-6%, anything with less fat or zero fat has had sugar put in to bulk it up. BSD recommend full fat Greek and to be honest it does make you feel fuller.
I have a mate who is on the BSD forums and she sent me a posting about eating fatty foods (talking cheese, bits of avocado here not fish & chips!!) when you feel the mad munchies/giddy etc from a lady who has been one of the long term BSDers, who has lost loads of weight, she was advising someone who was struggling, let me try & find it for everyone. Cutting & pasting on an iPad is not one of my favourite pastimes.