Olivia was previously well. At 10 years old, she was admitted for peri-orbital swelling and facial puffiness for 1 week. There was a history of transient erythematous rash over the elbows, but it subsided uneventfully, and there was no preceding sore throat or respiratory tract infection. There was no facial rash, oral ulcers or unexplained fever. Her urine was blood-stained, and it terrified the family; hence, she was brought to medical attention. Physical examination showed a normal body build for a 10-year-old girl. She had gained 2 kg in the past 2 weeks. Her blood pressure was at 140/90 mmHg. She had a puffy face, and her eyelids were swollen. There was bilateral pitting ankle oedema but no detectable ascites. Her urine examination showed a red cell granular cast and 3+ albustix. She was diagnosed with acute glomerulonephritis. How would you proceed with the management of this patient?