I didn't go to a single office hour session for all my professors that wrote me a letter of rec.
If I got an A or better in their class, I sent them an email asking for a letter of rec. I attached my resume, and offered if they would like to have my personal statement. I sent emails to 4 profs and 3 out of 4 got back to me and agreed to write me letters.
- Short greeting
- Gave them brief intro of who I am (1-2 sentences)
- Stated my grade in their class
- Gave reason for email (1-2 sentences)
- Asked VERY politely and humbly if they are willing to write a letter on my behalf
- Asked whether I can come to their office and discuss further if they would like to
Of course, professors will vary. I'm quite sure the letters from my profs are pretty vanilla, and I'm pretty sure one of the professors only wrote me a letter because my dad emailed him and told him to respond to me. But 3 vanilla letters are better than nothing.
Plus my dad told me graduate/professional schools normally don't weigh LoRs heavily (since LoRs normally say the same thing; how great the student is, how they're passionate etc). As long they're not negative its okay.
(If you're wondering about my dad's credibility and credentials to give me this advice: he's a director of a Veterinary Medicine school and leads the admissions process for prospective DVM students.)
If you would like to see what I wrote in my emails, feel free to PM.