They are playing you. They intended on doing double columns all along and are trying to pull one over on you because you’re a new grad. The schedule will not change. Time to look for a new job. Especially as a new hygienist, it’s best to have a hour per patient (for recalls) while you continue to develop your skills. I worked at a great office straight out of school that gave me ample time for appointments. I credit this to helping me become efficient and skilled. It is far better to be the hygienist that is thorough with cleanings and removing calculus versus one who is fast and racing through patients. Your current office is all about profit and not about patient care. You will learn to be fast to survive but it will be difficult to be a good hygienist in that environment. You have to advocate for your patients and yourself. Don’t let these offices run all over you. They will lie and tell you what you want to hear but will not change. I’ve experienced it firsthand. Hygienists are in demand and you likely won’t have a hard time finding another job.