Hi Aly. So long as they arent the quick oats you can have oats if you bulk them up so that they are not the entire meal. I make up 30g raw oats with water and a pinch of ground cinnamon then after it has cooled down a bit i add either half a banana (about 50g) or 40g of raspberries or blueberries and last of all 60 full fat greek yoghurt. I dont ever eat more than half a banana at a meal as in this diet it is a tropical fruit (nor recommended) and a whole one would be too high for glycaemic load. This also works brilliantly with 30g cooked quinoa (made up with water) instead of the oats. When quinoa is really chilled these combinations make it actually tastes like dessert and I find all versions have good fibre levels and keep me full till lunchtime (esp the banana version) without a big sugar spike). I do have 100ml of milk in a sugarless cafe latte as well. If i dont have the cafe latte i up the quantities of the yoghurt and oats. On its own the
Banana oats version in quantities given is 146 calories. All other versions with different fruit are lower in cals. (I do track cals as i find small differences in quantities of some foods can make big differences).
To mix it up and increase the protein I sometimes add 10gram of almonds to increase the good fat and protein. This quantity of almonds adds 63calories and can keep me going until 2pm.
Ive lost 7kg in the 4 weeks ive been doing the diet. The first week in spite of drinking 2-3 litres of water a day I became constipated so i have been making more high fibre choices in my overall calorie count and tracking fibre since then to good effect. Good luck as you explore your options.