A 32-year-old man from rural Maharashtra presents with jaundice, dark urine, and abdominal pain for 10 days. He reports consuming water from a hand pump 4 weeks ago. On examination: icterus present, liver edge palpable 2 cm below costal margin, tender. Spleen not enlarged. Laboratory findings: total bilirubin 8.2 mg/dL (direct 6.1 mg/dL), AST 1240 IU/L, ALT 1680 IU/L, ALP 320 IU/L, INR 1.1, albumin 3.8 g/dL. Serological tests: anti-HAV IgM positive, anti-HBc negative, anti-HCV negative. What is the most appropriate management at this stage?