I think this is the most recent:
https://osse.dc.gov/sites/default/files/dc/sites/osse/page_content/attachments/FINAL_Return%20to%20ChildCare%20Criteria_1Pager_Sept22_09.27.22.pdf
They haven't given us updated guidance in a very long time. Perhaps with the new strains and new boosters we'll get something new.