It depends. You can seek out a tax professional if you choose.
When you choose to amend, you will bring up the federal because everything flows from it to the state returns. Because Washington DC and Maryland (MD) have a reciprocal agreement, then you should have received a full refund of your MD taxes for those years. Likewise all tax should have been paid to DC as your resident state. It's possible you used the 'Credit for Taxes Paid to Another State' on your DC return when it did not apply. This could mean you would owe money to DC on an amendment.
Amend both MD and DC for the appropriate results. Keep in mind that you have time, tax year 2022 must be completed no later than April 15, 2026. You will check your W-2s for state withholding accuracy, then in the MD state return you will be a nonresident. TurboTax should ask about reciprocity. DC will include all income. Be sure your original refund or balance due is correct before you begin and review the instructions before you begin. @MaryK4 provided the link and it is placed here for your convenience.
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