Proof Of Shadowing

I’m currently a high school student who wants to join the BSMD program at BU. I’ve shadowed for at least 120 hours and people are telling me that I need to get certification from each of the doctors to certify that I’ve done so. If there is a specific format that I need to follow to get the certification, can somebody tell me?

I have never seen this be necessary.

Unless you are using it for some kind of class credit now, there is no need.