I need help on how to fix a previous year tax return with respect properly accounting for a catch-up contribution.

On 3/24/2020, I made a catch-up contribution of $1250 to my HSA for 2019 in order to maximize my total allowable contribution to $3500.  When I filed my taxes in 2020, my 5498-SA form box 2 showed my total contributions made in 2020 to be $5800, which included the $1250 that was the catch-up contribution for 2019 plus my normal $4550 contributions through my paycheck (for 2020).  Now when filling out my 2021 tax return, it says I have $1250 excess contributions for 2020.  How can I correct this?  I’ve used TurboTax to file my returns for the past several years.