@kruthika having followed this thread and absolutely agreeing with the suggestions/ instructions etc. from my colleague @DaveF1006 , I am just curious as to what you are trying to achieve. ( I recognize this is not the right forum for such discussions -- a PM is some what more appropriate.).
As I see it you are putting in a lot of work ( exposing your spouse's world income to US taxes , essentially for ever) for the benefit of MFJ filing status only-- that being a couple's standard deduction if you meet the full calendar year residency. You are also paying the SECA taxes, the benefits of which are iffy unless you both are able to settle down in the USA. Only you can judge the actual benefit and obviously it is your choice.
Perhaps, before you file there is a need for some discussion with a tax professional familiar with international tax laws and implications thereof. I say all of this because I am not sure I understand your longer term goal here. These are very serious choices and often there is no way to undo or redo.
If I am stepping on toes , please forgive.
Namaste ji
pk
