https://www.uscis.gov/sites/default/files/document/forms/i-485instr.pdf
Form I-693 Medical Examination
Form I-864 Affidavit of Support
Filing Fee: $1,440
Form I-912, Request for Fee Waiver
❕More info about Affidavit of Support
Below are ways you can help prevent an unnecessary delay in the adjudication of your Form I-485:
Submitting all required initial evidence and supporting documentation at the same time you file Form I-485 may eliminate the need for a Request for Evidence (RFE) from USCIS to obtain additional evidence and documentation, which will delay adjudication.
USCIS cannot approve your Form I-485 without your Form I-693. They generally consider a completed Form I-693 to remain valid for two years after the date the civil surgeon signed it but new USCIS Policy is that a Form I-693 signed after November 1, 2023, will not expire.