Hi
keeping a pack is the best thing, I'm 6ft so i had to go on to 4 packs and I found that having one at breakfast, a soup at lunch, another drink around 5.30/6 when i came home and then another one around 8/9 helped me with keeping myself happy in the evening.
Its a lot easier to be tempted by the fridge, in the lonely hours of the night!
I stayed on SS for 6 days, loosing 6pds and started 790 yesterday. Maybe if you can, try and stick SS out for a few days to give your body a detox from all the naughty food it may get!
Good luck