Once it's paid back, you can immediately add money to their trust account.
https://www.inmateaid.com/ask-the-inmate/once-i-pay-the-inmates-restitution-off-am-i-able-to-still-put-money-in-his-books-the-same-day-or-do-i-have-to-wait-certain-amount-of-time#answer
Accepted Answer Date Created: August 12,2019