I'm on a 3rd year rotation at a teaching hospital in a specialty i'm applying to for residency. I've had the opportunity to work 1-on-1 with an attending for 7 days straight, but then we switch to a different one. This past week I've performed strongly (both my assessment and feedback from the attending) and had a good rapport with the attending. This is my best shot at a LOR this year from a faculty member in this field...and I'm just worried that I won't have as good of an opportunity to connect as well, when I do my sub-I's and interact mainly with residents in 4th year. Is it okay/good idea to ask for a LOR, even though it's only been one week? Thanks for your feedback!