College freshman

I'm a freshman in college and just started last week but I have no idea how to handle the stress of it all. I'm only taking three classes which isn't a lot, I know, but I've also just moved up to full time at my job so I will most likely be working 12 hour days + homework and college + trying to maintain my relationship with my long term boyfriend. Also, I know I need tutoring in my math course, but honestly I can't find the time between actual school and work! They only offer the tutoring at my school Monday-Friday and it's free, but I work throughout the week. I occasionally have sundays off but that doesn't help with tutoring! I'm not sure what to do because I need the money from my promotion since I get a raise, but I'm terrified that I'll do awful in my classes, especially math. And on top of that I am of course trying to make time for family and my boyfriend. I dont know how to balance all of this! Any advice is welcome!!