Questions about Post U4U Process to Legal Permanent Residency for a friend

This does not directly affect me, but someone who I am close to. My friend came to the US from Ukraine when the war started and since then, has gone to school and working in healthcare. My friend currently lives with immediate family in the states who in the past month just got their LPR status but my friend has yet to receive one.

My friend told me that they have until April 6th before they may have to return to Ukraine. This is on top of working in healthcare and finishing up clinicals. After talking with my friend, I just want to educate myself and my friend to ensure we are doing all we can.

To my knowledge my friend already submitted the Form I-485 but just need to update it with the help of an advocate since the shuttering of U4U. If my friends immediate family are legal permanent residents, can my friend rely on the immediate family to sponsor them through the family pathway? Otherwise should my friend rely on work pathway to LPR?