A 64-year-old woman presents to the clinic with progressive swelling in her legs and face for the past few weeks. She also reports foamy urine and fatigue but denies fever, joint pain, rash, or hematuria. Vitals were: BP 135/85 mmHg, HR: 78 bpm. Physical Examination: Edema: Bilateral pitting edema in the lower extremities, No rash, joint tenderness, or hepatosplenomegaly. Laboratory Findings: Urinalysis: Proteinuria 4+, no hematuria, hour urine protein: 5.8 g/day, Serum albumin: 2.3 g/dL (low), Serum creatinine: 1.0 mg/dL, Lipid panel: Elevated total cholesterol and LDL. Additional Workup: HIV test: Negative, Hepatitis B & C tests: Negative, Anti-dsDNA: Negative, Anti-GBM: Negative, Serum complement levels (C3, C4): Normal. What is your next step in management?