Hey. Sorry you are struggling. To be honest I cannot even imagine being responsible for other human beings, I'm not doing too hot a job of caring for myself. Keeping my cats fed and happy feels like too much at times. So give yourself credit for how strong you really are.
As somebody else said, is there a close friend or relative who can help you out right now? Sometimes even just the littlest bit of help can make things feel more doable and it's important to have somebody on your side. Hang in there.