Is it mandatory to have recommendation letter from DO's in order to apply to a DO school? Will recommendation letter from an MD work? I have LOR's from MD's however I am having a hard time finding a DO who will let me shadow him/her and write me a LOR.
You should be able to find DOs to shadow in here. Write to a bunch of people and some are bound to get back to you. Make sure to mention that you are very interested in being an Osteopath instead of saying "i'm a pre-med".