Deadline for resubmitting Steuererklärung for year 2022

[Frantic]

I want to submit again the Steuererklärung 2020 in order to add the invoices paid in 2022 for a Bathroom creation in my Dachgeschosse. It has been a project that spanned from end 2022 till summer 2023. Some invoice has been paid on end of 2022.

I googled a bit and it looks like that if the change is to my advantage then I have 4 weeks from the submission. This means that I am already late.
Is that correct or am I missing something ?

[PandaMunich]

I want to submit again the Steuererklärung 2020 in order to add the invoices paid in 2022 for a Bathroom creation in my Dachgeschosse. It has been a project that spanned from end 2022 till summer 2023. Some invoice has been paid on end of 2022.

I googled a bit and it looks like that if the change is to my advantage then I have 4 weeks from the submission. This means that I am already late.
Is that correct or am I missing something ?

You can change your tax return up to 1 month and 3 days from the Bescheid ( = document issued by the Finanzamt as the result of your submission).