Interest expense recorded as principal

I have a note payable with fixed interest and principal payments. The note was entered correctly when it was initiated, but the person doing the bookkeeping last year was recording the interest payments as principal payments instead of interest expense. I know the journal entry would be to debit interest expense and credit the note, but I am concerned about taking that much interest expense in 2023 when it was actually paid in 2022. Is it proper to do it that way? Are their any GAAP principles I should be aware of for this situation?