Jason Risenburg, 38, is charged with murder, involuntary manslaughter and corrupting another with drugs for the April 2, 2012, death of Beth Risenburg, 31.
Toxicology reports received months after her death showed she died of a methadone overdose. Jason had a prescription for the narcotic prescribed to people trying to wean themselves off heroin or other strong opiates.
He was indicted on the charges in January after prosecutors presented the case to a grand jury.
Attorneys met this week in the case for a suppression hearing, regarding evidence in the case.
The trial had been scheduled for December but has been pushed back to Jan. 27, 2014, according to court records.