your 2024 IRMAA charge is solely based on your 2022 AGI, so your argument is going to be to eliminate your 2022 income related to you job before using the rest of the AGI to determine your IRMAA assessment. same thing for 2025 IRMAA (based on 2023 income)
2021 income is only used to determine 2023 IRMAA charges which is a non-issue for you since you stated you won’t move to Medicare until Jan 2024.
there is no 3 year look back
