<p>I don’t know if cutting out 2-3 schools will make a difference to your LOR writers, unless they are tailoring each and every letter to each school (aside from little changes). If they need to mail the letters directly to the school themselves, be sure to give them pre-addressed, stamped envelopes so that all they need to do is put their letter in them and put the pile in the mailbox. If the letters come back to you and you send everything in one giant packet, then still include envelopes with each school name on it for them to seal and sign. As long as you provide them with everything they need in an organized, simplified way, I don’t think they will mind sending out 12 letters. My prof suggested applying to 10-12 schools, so I assumed he wouldn’t have minded sending letters to that many.</p>