I'm living on a budget and hoping I can get away with spending 400z a month
This is absolutely fine provided you have a kitchen?.
Do you shopping in the farmers markets and you both can eat very well on this money.
And don't buy meat, it is the most expensive.
It is bad when you've eaten nothing but that in 5 days :(
existing on nothing but pate sandwiches and soup. Dreadful
Dreadful indeed, try to remember your body is a kind of machine and needs good fuel.
I know it can be depressing when you are undernourished
but try to get down to the farmers market with 40PLN and you should be able to make a stew that'll last the both of you for 3 days.