My return was at 4K. Same as last year. I got back on today to finish , Idk what I did, but it then changed to 2k. My income, etc is exactly the same as last year.

I reviewed it today, to continue, it had me check a box for my pension: I don’t recall seeing it before. My pension shouldn’t be taxed, but I think it was and that’s why it decreased by 2k. I just submitted it. How can I fix it?