Hey guys,
I am applying to mit early action. I asked my research mentor to write me a rec letter as a supplementary letter (not under the research portfolio because I had a different mentor for the research I’m submitting with the research portfolio). He says that he may not be able to get it in by 11/1, and may take an extra week or two. Is MIT okay with that?
As a side question, I did two research projects, one the summer after sophomore year and one the summer after junior year. I want to submit the junior year project as the research portfolio, but I want a letter of recommendation from my mentor for the sophomore year research as he knows me better. Should I just submit the letter of rec as a supplementary rec rather than under the research portfolio.