Moving from H1 to H4 While waiting on 485

[fateless]

Hi,

I am planning on getting married. My to-be wife is on H1-B right now and so do I.

Her PERM/I-140 is approved in EB3 category but waiting on PD to be current so she can apply for I-485.

Let's say after getting married she becomes my dependent and moves to H4.

Then when her PD becomes current, would she and I be able to file for 485 together?

Assuming her sponsoring employer does not revoke her I-140 and is still willing to do everything to make it work.

Please share your thoughts on this.

Thanks!