Prepare some fruits for yourself every week, and prepare some cucumbers and tomatoes at the same time. Fried potatoes with lard can completely replace a meal.
Buy a small refrigerator, prepare some vegetables and make yourself some cold dishes when you have time;
If you want to lose weight, steamed bread rolls are also vegetarian, but it is recommended to eat less;
Someone mentioned vitamin B 12. Yes, vegetarians need everything from food, but they will lack vitamin B 12, so prepare some.