Once a patient reaches remission, how do doctors decide between monitoring for relapse or starting maintenance therapy?

Once a patient reaches remission, how do doctors decide between monitoring for relapse or starting maintenance therapy?
What clinical trials are being done for maintenance therapy?
Which patients are the best candidates for maintenance therapy?
How does maintenance therapy benefit patients with acute myeloid leukemia? When is maintenance therapy used during the course of someone's AML treatment? How long does someone receive maintenance therapy for?
What is maintenance therapy for AML? What drugs are currently being used for maintenance therapy?
What are the common side effects of ivosidenib and how are these side effects managed?