I130 filed Dec, 19, 2021 for Mother of U.S. Citizen. Checked on-line today and it stated that on Dec 21, 2022, they sent me a Request for Evidence explaining that additional information is needed. They said that no further action will be taken on case until evidence is received. So from the looks of my dates, it appears that the I130 for parents processing through the Nebraska Service Center is taking at least one year or less. I say less because my mother's case had special circumstances that's why hers took a little longer. I will keep everyone updated