Invoice date

I would change the invoice date to 2023. I don't think there's any harm in doing so, and that way your turnover will be in 2023.

Yes, if you want that turnover in 2023, you will have to set the sales invoice date to 2023.

I would just change that date internally myself and be done with it, to be honest. As long as it is correct in your accounts (and therefore in the right year), I would think. I wonder if anyone else will respond.