OMS1 here, just finished my first semester and starting my second semester. Im going to be honest, I also thought the same way as you did before I started school. I heard about being sleep deprived, not having time for anything, going insane and etc. TBH I think a lot of people over exaggerate. Yes its a lot of work but i dont think its hard per se. Its only hard because of the amount of material in a short amount of time, but thats it. I still have time to do what I want, with planning of course. During exam weeks my schedule looks different because my focus is on exams, but not every week is like that. Most of the time I go to class from 10-2 , eat in between, study until maybe 8-9 , watch a show and then go to sleep and repeat. Ive gone home several times, have gone out with friends, gone to weddings, parties and events. Its all about coordinating/anticipating and planning ! But also I am not a straight A student, but I am passing and that's all that really matters to me. I told myself in the beginning of this journey that I dont need to be a star, I just need to pass. And its gotten me this far. I think its cool what I do, and the opportunity to learn, you will be amazed how much you will learn within four months and how efficient you will be at doing so. Dont stress too much , leave that for later.
Ill also be frank and the hardest part for me personally has been leaving home, and being alone. THAT has been hard for me, I am a home body and having to uproot from home and go away to another state has affected my mental health. But I have gone to therapy through my school which has helped me a lot ! Dont be afraid to ask for help, with anything once you start school ! medical schools want you to succeed once you are there.
Good luck
enjoy this moment