@fieldsofdaisies Pleased it helped a bit!
Just a few more thoughts- are you determined to be a vegetarian? I was, for a few years in my late teens, but when I went to uni and (long time ago!) it was catered accommodation, I found it impossible to carry on as there was hardly any choice. I now eat fish and a small amount of meat (but always free range as I can't accept factory farming) now and then.
I do think vegetarian diets can be carb heavy if you aren't careful- lots of pasta and cheese often!
The protein has to come from pulses and cheese/dairy if you are veggie so portion size is important as they can be quite high calorie.
Do you live on your own? If you do, can you do a weekly meal plan and a weekly shop- maybe online if that's an option? Get in a regular supply of fruit and veg etc.
Just as an example, my weekly shop includes (for 2 of us)-
apples, satsumas, bananas, strawberries, raspberries,(when UK in season) blueberries, avocado, tomatoes, salad, carrots, selection of greens either broccoli/savoy cabbage/cauliflower/ spinach, mushrooms, sweet potatoes, red/ green peppers, aubergine, cans chick peas, 1ltr Greek yoghurt, pkt mixed seeds....
In the freezer I always have peas, green beans and spinach.
Not boasting, so please don't think that, but from the above shopping list we manage around 5-7 fruit/ veg a day.
It's often helpful to at least plan meals 2 days ahead so you don't suddenly get hungry and resort to something 'junky'!
You might heard of the 'rainbow' plate or the 'traffic light plate' where the aim is to have a range of colours- like red/green/orange/yellow from different coloured fruit and veg. And to think carefully about anything white or beige (usually refined carbs with no value.)
Hope this helps and good luck!