US Immigration from Sweden

I just got my W-2 from my on-campus job where I worked in 2020. As I am no longer a student (F-1) and is going through AOS. How would I go about doing taxes? I.e. what form do I file with? Do I still use the form for non-residents or do I use the normal tax forms?

Me and my husband are planning on filing as married but filing separetly if that helps.

Last question about the 944 before I send it in (hopefully). For the part that asks about your additional income, they specify that it should be the income for the most recent tax year. Since the new tax year has started, I assume that I would not have to put anything there if I have not recieved anything, correct? Or are asking for the additional income for 2020? I just wanted to ask because if it is for last year, I would have to put a grant I received as a student on there whereas if they refer to this year I would not have to do so as I am no longer a student.

Thanks!

Does student loans count towards the "Additional income" on the I-944? I understand that the grant I received as a student is considered as income, but I know that student loans are generally not considered as income so I wanted to see what the rest of you did.

What type of proof of health insurance did you guys submit with your I-944 and how did you get it? Im using Aetna and I m really struggling to recieve official proof because I don t really know what to specifically ask for. They just seem confused when I call and ask them

Have anyone else had issues changing their address with USCIS when moving? I filed the AR-11 3 days before we moved in early December and it still has not been approved and when I call they just tell to wait because someone will get to it.

I am waiting for biometrics and obviously don't want to miss it but I am not sure what to do at this point. Has anyone been in a similar situation and if so, what did you do?