I'm an MS-4 applying for ophthalmology. I've gotten my 3 LOR's for SF application (2 ophtho, 1 surgery/research) and plan to use those same letters for applying to TY/prelim years through ERAS. I guess I missed the part where you can submit "up to 4 letters" to programs on ERAS. Should I request another LOR from a medicine attending or just go with 3 letters? Any advice is appreciated.