I lost 6 stone in a year on the red and green plan. I have no idea how it worked but initially I would eat loads - think the worlds largest jacket spud with a packet of bachelors past n sauce as its filling. That was just lunch. tea would be more potatoes cut into SW chips and served with poached eggs a whole tin of baked beans or mushy peas. I would then eat a cadbury Twirl every evening.
It was a massive amount of food but it worked and the weight literally fell off. My 1st ever week I lost 10lbs. But would usually average 2 to 3lbs a week.
As I lost weight I didnt feel the need to eat so much so my portions became more controlled and now I look at what I used to eat on the plan as absolutely mad.
I have been on and off the plan for 10 years now. Once I stop following it the weight goes on. Luckily I have never made a full gain.
I now still follow red and green and only occassionly do this new EE plan.
I do weekly syns - I have ditched my nightly bar of chocolate and save my syns for weekend boozing.
I have to say I have learnt alot of my healthy eating over the past 10 years and would never now (at age 40) eat jacket and pasta n sauce and chips for tea like I used to - despite the fact it worked and weight fell off me.
I now prefer the speed and superspeed salads with fish etc. I do more red days usually but it is expensive.
Stick with it OP. As you get used to what is what it will become easier and the plan is flexible really. I love not having to weigh out my foods (except healthy extras). I failed at diets that used to tell me 200g of chicken breast, 75g of carrots etc etc.