You scheduled estimates to be paid automatically?  You'd need to call and cancel those payments.

Otherwise theyre optional, just tell the client not to make them.  Theres nothing to amend.

The client letter contains the phone number to cancel these payments, but probably not the 7/15 one. The client can then set you  the remainder at https://www.irs.gov/payments/direct-pay

if lRS thinks auto, doing nothing NOT going to prevent withdrawal unless you change bank account leavng =0= balance