New job situation, need to live as frugal as possible for a while until I can find something better

Due to some unforeseen events and a job change with a 25,000 income cut, I’m looking for some help on how to live on my new income until I can find something better.

Going from $55,000/year to $30,000/year salary. Single, no car payment but do have student loans. After monthly rent, bills, and loan payments I have about $550 each month for other living expenses. (Food, gas, etc)

Had to downsize and my new home basically doesn’t have a kitchen, I have a microwave and toaster oven. Nothing is set long term and hoping to get back to my old “normal” but the new change in life is hard (I know, first world problems.) I think the most difficult thing so far has been food, I’m sick of ramen and it feels like that is my only option with how things currently are going. I used to eat out 1-2 times a week, and had fallen into speeding routine that I didn’t have to think too much about.

I have savings and an emergency fund, but don’t want to have to dig into it if I don’t have to, being that I’m not going to be able to add to it right now.

Any advice on how to change my spending mindset and also food/meal suggestions on a budget?