This article provides instructions to enlarge icons and text size via the Remote Desktop Connection.
Log into the remote session, right click anywhere on the screen and select “Screen resolution”
Click on “Make text and other items larger or smaller”
Select “Let me choose one scaling level for all my displays”
Select “Medium” or “Larger” or “Custom sizing options” to change the text and icon size
Click “Sign out now” and re-login to the session to refresh the settings.