Always me

That’s one of my issues too.

Bring a 2nd breakfast and a lunch

i think if you buy vegetables or meat in bulk it does cut costs compared to buying a premade meal each lunch/snack. the only problem is the time used to prepare it.

An easy and inexpensive way to make the lunch/snacks last longer is to have some raw veggies (in particular baby carrots since you don't have to clean/prep them, but cucumbers cut into sticks or similar things work too) and a dip (hummus, peanut/almond butter - plain or with honey, cinnamon, whatever mix ins, tzatziki, cream cheese, ranch, etc.). It's fast, doesn't have to be cooked, the veggies will help fill you up, and the dip will make it tasty. That way you can eat that when you're hungry before lunch and then have your lunch later.