An amended return does not stop or catch up to your original return. You will receive your refund for the amount listed in your original return. It takes 12 -16 weeks for the IRS to process an amended return. 3 weeks after you mailed your amendment, you can start tracking its progress at the IRS Where's My Amended Return? site. Instructions to amend can be found here:  https://ttlc.intuit.com/replies/5114064