Efiling amendments wont be available until the 26th (at least thats last I heard).

Generally you wouldn't amend for incorrect estimated payments, IRS catches those and corrects them automatically.

Since the income and tax liability didnt change only the payments did, you wont get the original or corrected numbers (which will be the same) to fill in automatically, you'd have to type those in manually...but again, generally you wouldn't amend for estimated payments.