Doctor memo to WFM

Hi.. My wife is 30weeks. Our follow up is at KKH. She feels very tired and weak all the time. Her work place is very far. But actually can work remotely. Has anyone try requesting doc memo to recommend work from home and rest. With this memo her HR can allow her to work from home. We dont want to waste maternity leave so fast. Thanks #pleasehelp #1stimemom #firstbaby #advicepls #1stimedad