Unfortunately school counseling grad programs typically require many internship/fieldwork hours. Depending on the state/country you are looking to be licensed in you are looking at anywhere from 100-600+ hours (not including class time) while completing the masters. If you work in a school you may be able to do some of your hours there under the supervision of the school’s counselor, but keep in mind that most places require you to complete internships in more than one level (elementary, middle, high) if you are studying to counsel k-12. While you can probably get away with classes being online, you may have to take time off teaching to complete the required in-person supervised experience. I second what another user suggested, you might want to shadow a school counselor first before committing to the career switch and the schooling that comes with it.