You're going to have to become a fan of protein somehow to be honest.
I lost 2 stone with ww a few years back.I don't believe in cutting out any food group and don't agree with low carbing, healthy carbs are just as essential to a healthy diet as any other food group. I'm also an ex nurse and I firmly believe the low carbing far will have widespread repercussions in the near future. BUT too much carbs are also bad for us, especially sugars.
Your "breakfast" is dreadful - basically just a sugar feast! Cereal bars are NOT real food. They are barely better than biscuits! High sugar fruits you chose there. Perfect recipe for a sugar slump mid morning. And yes precious little protein or even fat (fat is STILL essential even when losing weight) You should be covering all 4 food groups at every meal - vitamins & minerals (5 a day), proteins , fats and carbs.
Breakfast - better would be yogurt, less sweet fruit and/or not as much (given this thread is supposedly about portion sizes you don't actually GIVE the portion sizes of today's menu - a small handful of berries might be ok, a full 1lb punnet isnt ) and a HEALTHY carb portion like wholemeal toast or bagel.
Soup and cheese
for lunch - again inadequate and likely to lead to a mid afternoon energy slump. I'd recommend adding some carrot batons or celery sticks (the physical act of crunching or chewing tells our brain we are filling our stomach) and a wholemeal till or some high fibre crackers or crisp breads (crackers dipped in soup is lush)
Dinner - quorn stir fry. You say half YOUR usual portion of noodles but we don't know how much that is à nd therefore don't know how much half that portion is. If you were having 2.5 adults portion size before (not uncommon in overweight people that over the years portion creep leads to such habits, was guilty of it myself) then a half portion is still. 1.25 of an appropriate healthy adult portion. Also was the stir fry literally quorn pieces noodles and sauce? If so where was your veg portion? I'm veggie when I do a quorn stir fry it's à couple handfuls of quorn pieces, peppers, mushrooms, baby corn, maybe thinly sliced carrot strips, celery, diced onion, bamboo shoots, water chestnuts, depends what veg I have in. Also are you using a ready made sauce? They're very high in sugar. It's dead easy and quick to make your own there are tons of recipes online and as there was with ww, I'm sure sw have many recipes online I bet there's even syn free ones. Also were the noodles whokemael? More fibre fills you up and wholemeal products are more nutritious.
Your snacks aren't filling either, you seem to be making the classic dieters mistake of thinking snacks HAVE to be "treat foods" which they don't and bluntly that kind of thinking is how you ended up overweight (meant kindly, again used to do it myself)
Alternatives to crisps - crudites (with or without a LITTLE dip), or a trick I learned crudites seasoned with salt n pepper or other herbs and spices to your taste, you get the crunch and umami kick you're craving.
Sweet snacks - fruit, yogurt, small portion of sorbet, grapes and bananas freeze well and frozen take longer to eat.
You also don't mention drinks AT ALL
1 a very common issue is thirst being mistaken for hunger. Always have a drink of water before eating certainly before giving into a craving
2 also a common issue - not knowing cals/points/syns in a drink - I well remember years later a ww member at my group going
upon realising her regular morning latte order from a chain coffee shop had enough points for 2 meals!
3 yet another is forgetting to include all counted drinks in diary, another fellow ww member THOUGHT she was having "2 or 3" cups of tea at her office job, full fat milk and 2 sugars in each one ww leader told her to keep an actual tally rather than estimating turned out to be more like 6 or 7.
So, take all that into account maybe it helps?