Hello, Ive just started the Cambridge Diet again, currently on day 6. When I did it before a while back I was on 3 sachets a day (Im 5ft4) But now my Diet councellor has put me on 4 and half a pint of skimmed milk a day, I asked her why the changes etc and she says that if I only want to have 3 I have to get a doctors signature (Im in good health) From reading other peoples posts it seems most of you are on 3 while sole sourcing. Is she informing me wrong or am I just not understanding lol ?? Thank you for any answers. xx