Op doing some research yourself would be really useful especially as you have PCOS. As some have mentioned, lowering the carb is good for the condition. Healthy fats are also good in general. I would therefore not be eating low fat. Low fat yoghurt is often bulked with sweeteners and / or sugar. Butter is healthy in moderation, ditto full fat and foods like avocados.
Your aim should be to start eating a more natural diet and at least 50% of your plate should be plant based, preferably vegetables. Eating processed foods actually does us no favours and make us hold onto weight. I get it’s harder as you don’t eat meat but foods like baked beans, quorn and Kitkats are heavily processed.
People have mentioned insulin resistency. PCOS is linked to this. Your aim should be to even out the sugar spikes. If you do this, you can actually eat more food and not put on weight. Each time you just eat a kitkat as a snack on its own, you are spiking your sugar. This is the same with eating a piece of fruit or even drinking sweetened drinks.
The way to even out spikes is to consume vegetables, protein then the carb afterwards. So if you want a snack mid afternoon, you’d actually be better eating some carrot sticks, hummus and then the kitkat if you still really want it… or perhaps you could then just eat one stick?
Last year I lost 2.5 stone. I openly admit I’ve put half a stone on again. But I’m not a well woman and this is to be expected. I’ll restart once the weather warms up as I have more to lose. I ate a fair amount. A lot less sugar and far far more vegetables. I also ate in a 8-9 hour window. I didn’t eat breakfast as such, I can’t eat dairy yoghurt for example and changed it to veg, high quality fats, protein with a bit of carb. Ill give you a typical day:
Meal 1
Lettuce (lots), cucumber, 1/2 avocado, handful olives, chunk Brie, 25g smoked salmon (not weighing this, just the pack size lasted 4 salads). Large glug of olive oil, small glug balsamic.
Small graze bar, blueberries.
Meal 2
Roasted vegetables in lashings of olive oil (non starchy eg mushrooms, carrots, peppers, courgettes, onion, with a small amount sweet potato if I chose), maybe some boiled vegetables, small amount of protein.
Chunk dark chocolate or 3/4 jelly babies and maybe some blueberries.
Meal 3
One very large carrot, 40g protein - German sausage and cheese mix (not weighing, I know because the pack lasts 3 meals).
Or
A pack of nairns crackers with a bit of cheese and grapes.
(Sometimes I’d eat both for lunch and a smaller dinner.)
My dd has turned veggie. She really likes vegetables and salads. She eats things like carrot sticks and hummus, falafels and haloumi. She also likes meals such as fajita wraps.
We go through quite a lot of vegetables in this house. I tend to batch cook the veg so it can add it to meals. So fajita wraps one day with roasted veg and haloumi with it another etc.
Dd will eat more carb but she’s a teen. If I’m having wraps, I only eat one gluten free wrap but you’re several inches taller than me so idk if that would be enough for you. I load it up with veg, add a few pieces of chicken (you could use quorn), half an avocado, full fat sour cream (or crème fraiche), generous amount of grated cheese.
So my take is to eat far far more veg, quality protein in natural form rather than low fat and not to eat anything with sugar / sweetener in it unless you’ve eaten some protein and veg first.