MDI Gurgaon form

This is my second attempt at CAT, and I just started my first job after engineering (it’s been less than a month). The MDI Gurgaon form is asking for a work experience letter on my company’s letterhead, with a reference name and email.

Thing is, I’ve only just joined and don’t want to ask for it this early, as it might seem suspicious. Has anyone been in this situation? Any advice on how to handle this?