How do i cope better?

I feel like im drowning in everything thats goining on. My EPQ dissertation is due in less than a month, i have a medical interview in abt 12 days that im NO where near enough prepared for. I have sm hw being set each week. I have to do interview prep, theres a lot of stuff happening at home for me too so my family just stress me out even more than what i already am. I feel guilty for not doing anything after school but im just so tired that i dont feel like doing anything. I feel like imma fail getting into med schl and its just stressing me out. Does anyone know what i should do?? Idk, ik its a stretch but how do i cope??