I'm just finsihing week 2 too and have my weigh in tomorrow so we started at about the same time. I have a bit more to lose than you though, ideally 3 stone on this and then maybe a bit more going up the steps.
I also have a holiday in 4 and a half weeks, Would love to have lost 2 stone by then but we will see.
I have found this 2nd week quite easy and like the fact you don't have to worry about food.