Can I change my direct debit information for installment payments to another account after initial payment?

[AkinaLO]

You will need to contact the IRS in order to change your direct debit installment agreement. This will provide you with the contact information: https://www.irs.gov/help/telephone-assistance#telephone_numbers 

Here is information on changing your payment agreements: https://www.irs.gov/individuals/reviewing-and-changing-your-payment-agreement