I didn't claim rrsp 2023 jan and feb, the drop down menu does not give me the option to add them, only march-dec 2023 and jan and feb 2024

RRSP Contributions made during the first 60 days of the year are counted as being for the previous year. So, if you made a contribution in February of 2023, then you would need to enter that contribution on your 2022 tax return.