Hi Tracey 93lb's in 10 months is certainly do able. If you stick to it 100% you will have the best possible chance of getting to goal by next June!
Cambridge Diet is not for the faint hearted, it is radical, but that is why it gets such fab results. People say the first few days are the hardest, just make sure you drink all the water you are suppose to (minimum of 4 pints a day) of course it is always best to drink a little bit more if you can!
If you are feeling hungry, try to distract yourself, paint your nails, have a lovely bubble bath with a face pack or simply go out for some fresh air. You will find the first week passes quickly, and after that it will be a breeze. You will be sooo excited when you go for your first weigh in and see the scales showing a fab loss!