I am currently repeating a cell biology class and was wondering if I could ask the prof for an LOR. I have gone to her office hours and even talked with her at a Meet the Profs event that my club organized. I am still in her class and plan to apply this May. I am not sure if it would be appropriate as I am still in her class and have not really talked to her beside questions about the class during the office hours. Unfortunately I dont have many profs that I left an impression on, that would remember me now. Any advice helps and thanks.