Have you considered that you may be fined if you re-report (Pereschet) your submitted report?

If you re-report (Перерасчет) in accordance with this article, the tax amounts in your report will decrease, and if you have unreasonably reduced it, this will entail the imposition of a fine in the amount of twenty percent (20%) of the amount of the hidden (understated) tax base in accordance with Part 2 of Article 223 of the Tax Code.

However, there is also a case where exemption from liability is possible under Part 4 of Article 83 of the Tax Code:

If the clarified tax report is submitted to the tax authority after the tax payment deadline, the taxpayer is exempted from liability if he simultaneously meets the following conditions:

1. The clarified tax report was submitted before the moment when he learned that the tax authority had identified the circumstances that led to the decrease (change) in the calculated tax amount or that a tax audit had been appointed;

2. He has paid the missing tax amount and the corresponding penalties before submitting the revised tax return.