HSA contribution wrong tax year

I personally made a HSA contribution in January 2022 which I accidentally added to tax year 2021. I filed my taxes not knowing this so the contribution does not show up anywhere as reduced taxable income. I now want to move that contribution from 2021 to 2022. I already spoke with my HSA about filling a mistaken HSA contribution form but they say I need to talk to the IRS or tax professional. Sounds like a huge ordeal when it really should be rather simple.