Exactly what Dr.StephenStrange said! It's always a great idea to ask an attending if they would be willing to write you a letter of recommendation (LOR) when you are in your 3rd year rotations. However, an attending won't write your letter until you provide them with the ERAS upload info. The ERAS token which will give you the ability to access ERAS and the information that your LOR writers will need in order to upload your LOR. Once you get your ERAS token, start reaching out to your LOR writers. I recommended scheduling a formal meeting with them. This way they can get to know you better and you can directly hand them useful information for writing your LOR (I.e. CV, personal statement, a summary of 2-3 patient encounters you had during your rotation with them, ERAS upload info, etc).
Good luck!
Annette G, MD, MPH - USMLE Tutor and Residency Advisor at Med School Tutors