Re-file tax return by filing separately to get stimulus benefit
I am on H1 visa and have a valid SSN for 12 years (F1 and H1). My wife has only ITIN and she does not work and does not have SSN. Our daughter was born here and has SSN.
We filed married filing joingly (did not realize the consequences! ) and received our tax returns and NO stimulus rebate.
Since we itemized the deductions "married filing jointly" or "separately" should not affect. And since my wife does not work and file taxes she is still my dependent and I can take 3 exemptions including her. (AM I correct?)
Can we re-file our tax return by filing separately this year (i.e. extension/amendment within 3 months?) Has anyone done this? Please let me know. I think if I file separately at least I will get $900?
I appreciate your answer. Thanks!