Can two forms of i864 be file for my husband? I’m the petitioner,but I am on the poverty line. My dad is filing i864 form and mom is filing i864A.

My now husband enter the country with a K1 visa, we got marry and did the adjustment of status but in that moment I was not working, so I didn’t filed the i864 (Affidavit of Support Under Section 213A of the INA).My dad ( his father in law) filed the form I 864 and my mother filed the form I 864A(Contract Between Sponsor and Household Member). Then, we receive a letter asking for the form i864 file by me( the wife-petitioner) with all the supporting documents(W2, taxes). Should I only file the form i864? Since my dad already file the i864 with my mom i864A? Would it be a problem having two form i864? Or once I file the form I 864 my dads form i864 will the cancel? Or Should I file the form i864 together with my dad i864a and my mom i864a ? Since I’m still on the poverty line?