I found good instructions under the section "How to claim the Employee Retention Credit" on the IRS resource on ERC
It sounds like you amended the 941s in 2021 to reflect the credit. Next step is to reduce your wages for that same period, 2021. So you will need to amend the 2021 form 1120S and reduce wages by the amount of the credit. Then your personal 1040 will also need to be amended. When you amend the 1120S for 2021 it will create a new K-1 reflecting more net income since you reduced the wages. When you key the amended K-1 into your personal return it will flow to the Sch E appropriately.
