Hello...I've been doing the CD for 3 weeks now and although I'm 5ft6 I opted for 4 packs. I lost 1 stone in 2 weeks but I don't think I've lost any this week. Could this be because I'm having 4 packs. I honestly don't think I could do it with 3! And surely even 4 packs is really low in terms of daily calories. Do you think 4 packs will mean I wont lose the weight as quickly?