The issue isn't whether you are "in DC" for 183 days or more. DC will regard you as a resident for tax purposes if you maintain a place of abode in the District for 183 days or more.
See "What is the meaning of Statutory Residency?" in this web reference:
https://otr.cfo.dc.gov/page/audit-division-frequently-asked-questions#:~:text=Section%2047%2D1801.04...
If you live in MD or VA, you'll be subject to their definitions of residency - which you can find on each state's tax website. Read the definitions carefully; "residency audits" are not uncommon.
**Answers are correct to the best of my ability but do not constitute tax or legal advice.
