wait until the original tax return is approved and settled. it is possible that the IRS sees the same error you do and corrects it and hence no amendment is necessary. Attempting to amend prior to the IRS approving the original tax return could just confuse things further
there are only penalties if the cash money is incorrect (which you have now corrected, so any interest stops upon payment);
there are no penalties for making a mistake on the income tax form that doesn't cause more money to be owed - and in your case it no longer would require more money owed, so just go on with life - the paperwork will resolve itself eventually. .
