Proof of living

Long story short:

I have not lived with my since spouce April 2025, although we're not divorced. She therefore filed HoH since she have the kids more than 50%, and so far I think it's all on par with guidelines. She have an apartment in her name and utilities. Here's where the twist comes in.

I do not have anything in my name, as I am an immigrant and staying with my sponsor until I can go back home. Twist number 2 is that my spouse and the children are still on that address as well, and she forgot to mention that while doing her taxes.

Is the lease and her utilities enough if they decide to audit her, or is it better to just amend as soon as the money hits ( as according to IRS instructions )?

I have tried to call IRS and ask, but I can't get through the automatic responses and actually get to talk to someone