Robert Steven Wright has been in custody since December 11, 2018. If sentencing were to occur in late June 2023, and if he became eligible for parole in 10 years, Wright could be out of prison in just over 13 months. However, the judge is not likely to give him the minimum eligibility period, due to the violence involved in Renee's murder. There are other factors involved in parole, as discussed previously. However, an appeal would not make much sense in this scenario, IMO. It would take longer for an appeal to wind its way through the courts than time remaining before parole.
The biggest favour he could do himself is to use this delay to reflect and accept responsibility and express remorse. The violence is a significantly aggravating factor, but just about every other wind blows in his direction. Young at the time of commission, clean record, educated and employed and a signicant support network. The part of me that always assumes the best of people likes to imagine that his reticence is as much about fear and shame as it is about deviousness.