Accidentally Filed Single Member LLC as Corporation

Hello, I recently started a business and am a single member LLC. I used the business version of TurboTax but accidentally submitted my taxes on IRS form 1120 instead of a schedule C on my personal taxes (already submitted). So my question is, how do I file an amendment? Do I just zero out any reported income on the 1120X and then add a schedule C to my 1040X? Or is there an additional step to notify the IRS to not view my blanked out 1120 and instead look at the revised schedule C for now and all future tax returns? I don’t want to tell the IRS I mean to use the 1120 going forward, I plan to use Schedule C’s.