My family dentist, whom I also shadowed, agreed to write a letter of reference for me for dental school months ago. Since I started my application, I've been sending countless reminder emails, to which he's always replied that he'll write it and submit it that night. However, it's over a week later and it's still not uploaded. I'm really worried....what should I do? I kind of feel like I'm harassing him by reminding him so often.