請xiaobaitu, radiology, pjang 等大蝦指教

I applied green card through NIW. My I-485 was approved. But unfortunately my wife case is still pending. I’m now working in a Pharmaceutical company with major of Plant Biology (I’m applying NIW with this major), since I got my green card:

1. Can I change job to Computer Science field?
2. If I change job to Computer Science field, whether this will affect my wife pending I-485 case?
3. If I change job, whether USCIS will revoke my green card?

Thank you very much,

Jack