This link will provide you with the laws in your state. Just scroll down and click on whatever state you live in. Some states law says if getting vaccinated is against your religious beliefs you can be exempt just depends where you live.
I know you're water fasting but the best thing anybody can be doing right at this moment is eating a plant based diet with nuts and seeds. It will build up your natural immune system and enable you to throw off disease.
I can't tell you what you should do regarding the shots but I can tell you that under NO circumstances would I take any kind of vaccinations period. I understand you're in between a rock and a hard place with being enrolled in college, hopefully you can find an exemption on that website that applies to you.