For your 2019 return, you cannot change your information once a return has been accepted & processed. You will be able to change your personal information when you file your 2020 return.
Right now you can send in a change of address form (8822) to the IRS.
https://www.irs.gov/faqs/irs-procedures/address-changes/address-changes
If you need to change your information for your State, you can go to your State's website for information.
