The contribution made for 2022 was reportable on your 2022 tax return, on line 1 of 2022 Form 8606 if nondeductible. Line 1 will fall through to line 14 (assuming no 2022 distributions) to be carried forward to line 2 of your 2023 Form 8606 to be added to the nondeductible contribution made for 2023 shown on line 1.
