A 28-year-old woman from rural Maharashtra presents with fatigue, dyspnea on exertion, and recurrent infections for 6 months. She has had 3 pregnancies in the last 4 years, all vaginal deliveries. Dietary intake is predominantly vegetarian with minimal fortified foods. On examination: pallor present, spoon nails noted, heart rate 102/min, BP 110/70 mmHg. Laboratory findings: Hb 7.2 g/dL, MCV 62 fL, MCH 18 pg, serum ferritin 8 ng/mL, TIBC 420 µg/dL, serum iron 32 µg/dL. Peripheral smear shows hypochromic microcytic RBCs with occasional target cells. What is the most appropriate initial management?