In the event the defendant, because of physical disability or poverty, is unable to pay fine and/or costs either immediately or in installment payments, he/she must be relieved of the fine and/or costs; or, in the alternative, be required to report back to the court at a time fixed by the court to determine if a change of condition has made it possible for the defendant to commence making installment payments toward the satisfaction of fine and/or costs.
Okla. Stat. tit. 22, § 8.5