Hiit upstairs+first year on college

In a few weeks I will start my first year of college and I lose my motivation.

I currently live with my parents and it is easier for me to have this lifestyle but I will soon move with my brother, our apartment is on the 4th floor and here starts my concerns, I will have a more loaded schedule and thanks to this I think I will not have time to work out and eat clean. I do not want to bother my neighbors and I wonder if I can do hiit or cardio without making so much noise.

My brother and I have a different lifestyle and I always try to make healthy choices and cook my own food, but because of the time I'm afraid I will not have time to do this anymore. I do not want to give up this style but I lost my motivation and I do not know if I can continue.