The college student might be being even more cautious than you are. My DD is only walking in our neighborhood and always wearing a mask. I’m immune compromised and she also has a risk factor, but less serious. She was a counselor for rising kindergarteners last summer at one of major DC private school camps and has tons of babysitting experience. Internships she had lined up have been canceled, so she is going to take online classes from her university and try to do some childcare, though not full time like you need. She can’t be the only cautious college student looking for summer work. I’d start with a neighborhood listserv if you have one or work or church networks. Good luck.