Should The Entire Schedule Of Anti Rabies Vaccine Be Repeated After Missing A Dose?

I will be travelling to southeast asia in mid January and as such have started the pre-encounter regimen for rabies. I received the first shot (of 3) about 2 weeks ago and failed to schedule an appointment for the second which is supposed to be taken a week later. The next appointment I have is Jan. 7th and I can't get a sooner date. Will I have to restart the entire 3 shot regimen, or will I be able to pick up where I left off? Thank you!