A 38-year-old male with bipolar II disorder and moderate alcohol use disorder has been engaged in an integrated dual-diagnosis treatment program for 16 weeks. His treatment includes lithium 900 mg daily with a trough level of 0.72 mEq/L, weekly motivational enhancement therapy, and participation in a relapse prevention group. At baseline, his PHQ-9 was 18, his Alcohol Use Disorders Identification Test (AUDIT) score was 26, and he reported consuming an average of 28 standard drinks per week. At today's evaluation, his PHQ-9 is 11, AUDIT score is 14, and he reports consuming eight standard drinks per week, concentrated on weekends. He has had no hypomanic episodes during treatment. He reports improved work attendance but continues to drink three to four beers every Friday and Saturday evening, stating he feels this is controlled and social. His liver enzymes are normalizing with GGT decreasing from 86 to 42 U/L. The PMHNP is evaluating the overall treatment response for both disorders simultaneously. Which of the following best represents the appropriate evaluation?