At this point, you will need to contact the IRS directly to have it changed. Once the return is sent in and accepted, there is little else you can do other than contact the IRS.
If you file your return with the wrong address, that can't really be undone. You'll need to contact the IRS directly to update your address (you can use their toll-free number: 1-800-829-1040).
If your return is rejected by the IRS, you can simply change your address before resending your tax return.