I want to talk about your dog what are your options can your sister take the dog? Can u find a living situation where u can keep the dog at LSU? Is the dog a particular breed and someone from the breed rescue club could take it in? There are
Many other things you should or could do about the other issues but don’t let the dog stop you… I believe finding a spot for the dog is a good first step. Pets are important but you and your education are important too I think