Hi Anna
I've noticed a few things...
Use of words like "mostly" following and 15 syns "approx".I would recommend keeping a food diary for a few days at least and writing down everything that passes your lips as you may be suprised at how many syns you are actually clocking up.
As above I'm wondering if you are having more syns than you realise?
Depending on what bread you are eating it could be anything from 6-9 syns. 2 rich tea biscuits is another 4, Brazil nuts need to be synned and 5 nuts is 6 syns. You also mentioned coconut oil which is 2 syns per teaspoon (although I wondered if it was a mistype for coconut milk which might be your HexA?)
Also which yoghurt are you eating and do they need to be synned?
Finally I would also keep an eye on your speed. Bananas are free but not speed. Why not fill your porridge with berries to get more speed in. Don't forget 1/3 of your plate should always be speed and speed should be your first choice of snacks.
You shouldn't be hungry on SW if you are doing it right. I'd try upping the veg with your dinner at night if you are hungry afterwards, but if you want more pasta have it (although be aware you will probably have to reduce this once you get lower in weight).
I graze all day and I've lost 20lbs since xmas

. I literally stuff my face all day, it's just with the right stuff (fruit, yoghurt, jacket spud for lunch, baby tomatoes, fish sticks, mug shots, ham, turkey chunks etc.
Good luck and hope this helps.